Showing posts with label spacecraft. Show all posts
Showing posts with label spacecraft. Show all posts

NASA's Glenn Research Center prepares For Reorganization

Glenn Research Center

NASA's Glenn Research Center is touching ahead to process details of its future reorganization while preparing for a new administrator next month. Deputy Director James Free will take charges as director 4th Jan 2013 with Ray Lu go's retirement.

The Cleveland Plain Dealer statements that Free held this week that he expects the main workforce to remain constant. It's about 25% smaller than in the mid-1990s.The reorganization map is still awaiting last approval. But officials told it will focus on 4 core areas counting work on space power, propulsion and communication systems and superior materials. James Free also says he's dedicated to increasing the quantity of government and commercial spacecraft testing complete at the center's Plum Brook Station in Sandusky.

NASA Scientists Found Ice On Mercury


Mercury may be a boiling hunk of rock just next door to the hot sun, but planetary scientists have exposed nearly pure frozen water and even some natural material in the planet's frigid Polar Regions.The findings as of the Messenger spacecraft orbiting the planet cap the decades long look for for water on the second-hottest planet in the solar system and may assist scientists better appreciate the origins of the molecular structure blocks for life on Earth.

Before the Messenger spacecraft dropped into track in March 2011, Mercury remained incredible of an enigma. The Arecibo radio get smaller in Puerto Rico detected bright, shiny spot on the planet's surface in 1991, which scientists interpret as a strong sign of ice-covered water. These spots appear to map well with some of the indistinct parts of polar craters that were glimpsed in the 1970s by the Mariner 10 spacecraft, which saying only about partially of the planet's surface.

Solar System Montage -Jet Propulsion Laboratory In Pasadena


This Solar System montage of planetary imagery taken by spacecraft managed by the Jet Propulsion Laboratory in Pasadena, CA. Included are (from head to foot) images of Mercury, Venus, Earth (and Moon), Mars, Jupiter, Saturn, Uranus and Neptune. The spacecraft accountable for these metaphors are as follows the Mercury picture was taken by Mariner 10, the Venus illustration by Magellan, the Earth image by Galileo, the Mars image by Viking, and the Jupiter, Saturn, Uranus and Neptune picture by Voyager.

The inner planets are Mercury, Venus, Earth, Moon, and Mars are roughly to scale to each other the external planets (Jupiter, Saturn, Uranus, and Neptune) are roughly to scale to each other. Actual diameters are listed below: Sun 1,390,000 km Mercury 4,879 km Venus 12,104 km Earth 12,756 km Moon 3,475 km Mars 6,794 km Jupiter 142.984 km Saturn 120,536 km Uranus 51,118 km Neptune 49,528 km Pluto 2,390 km

NASA Dawn Spacecraft Captures First Image Of Nearing Asteroid

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NASA's Dawn spacecraft has obtained its first image of the giant asteroid Vesta, which will help fine-tune navigation during its approach. Dawn expects to achieve orbit around Vesta on July 16, when the asteroid is about 117 million miles from Earth. The image from Dawn's framing cameras was taken on May 3 when the spacecraft began its approach and was approximately 752,000 miles (1.21 million km) from Vesta. The asteroid appears as a small, bright pearl against a background of stars. Vesta also is known as a protoplanet, because it is a large body that almost formed into a planet. "After plying the seas of space for more than a billion miles, the Dawn team finally spotted its target," said Carol Raymond, Dawn's deputy principal investigator at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif. "This first image hints of detailed portraits to come from Dawn's upcoming visit."

Vesta is 330 miles (530 km) in diameter and the second most massive object in the asteroid belt. Ground- and space-based telescopes obtained images of the bright orb for about two centuries, but with little surface detail. Mission managers expect Vesta's gravity to capture Dawn in orbit on July 16. To enter orbit, Dawn must match the asteroid's path around the sun, which requires very precise knowledge of the body's location and speed. By analyzing where Vesta appears relative to stars in framing camera images, navigators will pin down its location and enable engineers to refine the spacecraft's trajectory. Dawn will start collecting science data in early August at an altitude of approximately 1,700 miles (2,700 km) above the asteroid's surface. As the spacecraft gets closer, it will snap multi-angle images allowing scientists to produce topographic maps.

Dawn will later orbit at approximately 120 miles (200 km) to perform other measurements and obtain closer shots of parts of the surface. Dawn will remain in orbit around Vesta for one year. After another long cruise phase, Dawn will arrive in 2015 at its second destination, Ceres, an even more massive body in the asteroid belt. Gathering information about these two icons of the asteroid belt will help scientists unlock the secrets of our solar system's early history. The mission will compare and contrast the two giant asteroids shaped by different forces. Dawn's science instruments will measure surface composition, topography and texture. Dawn also will measure the tug of gravity from Vesta and Ceres to learn more about their internal structures. The spacecraft's full odyssey will take it on a 3-billion-mile (5-billion-km) journey, which began with its launch in September 2007.

NASA Mars Rover Approaches Long-Term Goal

NASA Mars

The NASA Mars rover Opportunity has gained a view of Endeavour crater from barely more than a football-field's distance away from the rim the rim of Endeavour has been the mission's long-term goal since mid-2008.

Endeavour offers the setting for plenty of productive work by Opportunity the crater is 14 miles (22 kilometers) in diameter -- more than 25 times wider than Victoria crater, an earlier stop that Opportunity examined for two years, Observations by orbiting spacecraft indicate that the ridges along Endeavour's western rim expose rock outcrops older than any Opportunity has seen so far the selected location for arrival at the rim, "Spirit Point," is at the southern tip of one of those ridges, "Cape York," on the western side of Endeavour.

Opportunity and Spirit completed their three-month prime missions on Mars in April 2004 both rovers continued for years of bonus, extended missions both have made important discoveries about wet environments on ancient Mars that may have been favorable for supporting microbial life The mission of the Spirit rover, for which Spirit Point was named, was concluded in May, 2011, after the rover did not re-establish communications following the Martian winter.

NASA's Dawn's Spacecraft Views Dark Side of Vesta

Spacecraft Views Dark Side

Dawn took this image over Vesta's northern hemisphere after the spacecraft completed its first passage over the dark side of the giant asteroid. It is northern hemisphere winter on Vesta now, so its north pole is in deep shadow.

The Dawn science team is working to determine the significance of the distinct features in this image, which include large grooves or ridges extending for great distances around Vesta.This image was taken by Dawn's framing camera on July 23, from a distance of 3,200 miles (5,200 kilometers).

The Dawn mission to Vesta and Ceres is managed by NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, for NASA. The University of California, Los Angeles, is responsible for overall Dawn mission science. The Dawn framing cameras have been developed and built under the leadership of the Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany, with significant contributions by DLR German Aerospace Center, Institute of Planetary Research, Berlin, and in coordination with the Institute of Computer and Communication Network Engineering, Braunschweig. The Framing Camera project is funded by the Max Planck Society, DLR, and NASA/JPL.

MAVEN Mission Completes Major Milestone

MAVEN Mission

The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission reached a major milestone last week when it successfully completed its Mission Critical Design Review (CDR).MAVEN, scheduled for launch in late 2013, will be the first mission devoted to understanding the Martian upper atmosphere. The goal of MAVEN is to determine the history of the loss of atmospheric gases to space through time, providing answers about Mars climate evolution. It will accomplish this by measuring the current rate of escape to space and gathering enough information about the relevant processes to allow extrapolation backward in time.

Noting this milestone, Michael Meyer, Lead Scientist for NASA's Mars Exploration Program at NASA Headquarters said. "It is a real pleasure to see the MAVEN team is doing an exemplary job on this important mission, which was identified as a top priority mission in the 2002 National Research Council Decadal Survey and addresses high-priority goals of two Divisions—Planetary Sciences and Heliophysics."

"Understanding how and why the atmosphere changed through time is an important scientific objective for Mars," said Bruce Jakosky, MAVEN Principal Investigator from the Laboratory for Atmospheric and Space Physics at the University of Colorado (CU/LASP) at Boulder. "MAVEN will make the right measurements to allow us to answer this question. We’re in the middle of the hard work right now—building the instruments and spacecraft—and we’re incredibly excited about the science results we’re going to get from the mission."

Modified GT Sets World Speed Record at SLF

World speed record

A modified Ford GT set a world record during testing June 16 and 17 when Johnny Bohmer reached 223 mph on the runway of NASA Kennedy Space Center's Shuttle Landing Facility. A Guinness World Records judge authenticated the accomplishment, confirming Bohmer's place in automotive history, along with Kennedy's role in the achievement.

Bohmer's Performance Power Racing modified the car and was testing the suspension and aerodynamic coatings at the runway. The record is the first in the new Guinness category of standing mile for a street-legal car. That means Bohmer began from a standstill and revved up to speeds faster than the space shuttle's average touchdown speed.

"This is probably the best place on the Earth," Bohmer said before the run. "It's very nice, I'm very happy with it. I took it up to 210 (June 16) without trying."Built for spacecraft returning from orbit at high speeds, the three-mile long concrete runway is becoming a preferred testing ground for drivers and racing teams. Joe Gibbs racing, which competes in NASCAR events, has used the runway for evaluations, as have Indy Car teams.

NASA's Gravity Probe B Confirms Two Einstein Space-Time Theories

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NASA's Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein's general theory of relativity, which the spacecraft was designed to test. The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time around a gravitational body, and frame-dragging, the amount a spinning object pulls space and time with it as it rotates. GP-B determined both effects with unprecedented precision by pointing at a single star, IM Pegasi, while in a polar orbit around Earth. If gravity did not affect space and time, GP-B's gyroscopes would point in the same direction forever while in orbit. But in confirmation of Einstein's theories, the gyroscopes experienced measurable, minute changes in the direction of their spin, while Earth's gravity pulled at them.

"Imagine the Earth as if it were immersed in honey. As the planet rotates, the honey around it would swirl, and it's the same with space and time," said Francis Everitt, GP-B principal investigator at Stanford University. "GP-B confirmed two of the most profound predictions of Einstein's universe, having far-reaching implications across astrophysics research. Likewise, the decades of technological innovation behind the mission will have a lasting legacy on Earth and in space." GP-B is one of the longest running projects in NASA history, with agency involvement starting in the fall of 1963 with initial funding to develop a relativity gyroscope experiment. Subsequent decades of development led to groundbreaking technologies to control environmental disturbances on spacecraft, such as aerodynamic drag, magnetic fields and thermal variations. The mission's star tracker and gyroscopes were the most precise ever designed and produced.

GP-B completed its data collection operations and was decommissioned in December 2010. "The mission results will have a long-term impact on the work of theoretical physicists," said Bill Danchi, senior astrophysicist and program scientist at NASA Headquarters in Washington. "Every future challenge to Einstein's theories of general relativity will have to seek more precise measurements than the remarkable work GP-B accomplished." Innovations enabled by GP-B have been used in GPS technologies that allow airplanes to land unaided. Additional GP-B technologies were applied to NASA's Cosmic Background Explorer mission, which accurately determined the universe's background radiation. That measurement is the underpinning of the big-bang theory, and led to the Nobel Prize for NASA physicist John Mather.

Two Events Commemorate 50th Anniversary of U.S. Human Spaceflight

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NASA Administrator Charles Bolden will commemorate the 50th anniversary of the first U.S. manned spaceflight during two events this week around the agency's Kennedy Space Center in Florida. NASA Television will carry both events live. On Wednesday, May 4, at 2 p.m. EDT, the U.S. Postal Service will unveil two new stamps at the Rocket Garden of the Kennedy Space Center Visitor Complex, located on State Road 405. Journalists interested in covering the event should contact Andrea Farmer at 321-449-4318 or Jillian McRae at 321-449-4273. Media need to arrive at least 30 minutes before the start of the ceremony.

One stamp commemorates NASA's Project Mercury and Alan Shepard's historic launch on May 5, 1961 aboard the spacecraft Freedom 7. The second stamp honors NASA's MESSENGER, which reached Mercury in March to become the first spacecraft to orbit the planet. The two missions frame a remarkable 50-year period in which America advanced space exploration through more than 1,500 manned and unmanned flights. Mercury astronaut Scott Carpenter and members of the Shepard family will join Bolden at the stamps' unveiling and at a 50th anniversary ceremony on Thursday, May 5, at 9 a.m., at the Cape Canaveral Air Force Station.

To cover the event, news media representatives need to be at the Air Force Badging Office (Gate 1) at 6:30 a.m. for transportation to Complex 5/6. Mission badges for the STS-134 shuttle mission will be honored for this event. Reporters who do not have one must contact Christopher Calkins at 321-494-7732 or Auburn Davis at 321-494-6489 to arrange for media credentials. The Thursday event includes a re-creation of Shepard's flight and recovery, as well as a tribute to his contributions as a moonwalker on the Apollo 14 lunar mission. KSC Director and former astronaut Bob Cabana and more than 200 workers from the original Mercury program, also will be in attendance.

NASA Honors Pioneer Astronaut Alan Shepard With Moon Rock

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NASA will posthumously honor Alan B. Shepard Jr., the first American astronaut in space who later walked on the moon, with an Ambassador of Exploration Award for his contributions to the U.S. space program. Shepard's family members will accept the award on his behalf during a ceremony at 5:30 p.m. EDT on Thursday, April 28, at the U.S. Naval Academy Museum, located at 74 Greenbury Point Road in Annapolis, Md. His family will present the award to the museum for permanent display. NASA's Chief Historian Bill Barry will represent the agency at the event, which will include a video message from NASA Administrator Charles Bolden.

Shepard, a 1945 graduate of the Naval Academy, was one of NASA's original seven Mercury astronauts selected in April 1959. On May 5, 1961, he was launched from Cape Canaveral, Fla., aboard the Freedom 7 spacecraft on a suborbital flight that carried him to an altitude of 116 miles. Shepard made his second spaceflight as the commander of Apollo 14 from Jan. 31 to Feb. 9, 1971. He was accompanied on the third lunar landing by astronauts Stuart Roosa and Edgar Mitchell. Maneuvering the lunar module "Antares" to a landing in the hilly upland Fra Mauro region of the moon, Shepard and Mitchell deployed and activated a number of scientific instruments and collected almost 100 pounds of lunar samples for return to Earth.

Reporters interested in covering the award ceremony must contact the Naval Academy's public affairs office at 410-293-2292 or mediarelations@usna.edu by noon, Wednesday, April 27, for access information. NASA is giving the Ambassador of Exploration Award to the first generation of explorers in the Mercury, Gemini and Apollo space programs for realizing America's goal of going to the moon. The award is a moon rock encased in Lucite, mounted for public display. The rock is part of the 842 pounds of lunar samples collected during six Apollo missions from 1969 to 1972. The astronauts or family members receiving the award present it to a museum of their choice, where the moon rock is placed on public display. 

NASA Awards Next Set Of Commercial Crew Development Agreements

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NASA has awarded four Space Act Agreements in the second round of the agency's Commercial Crew Development (CCDev2) effort. Each company will receive between $22 million and $92.3 million to advance commercial crew space transportation system concepts and mature the design and development of elements of their systems, such as launch vehicles and spacecraft.

The selectees for CCDev2 awards are:
-- Blue Origin, Kent, Wash., $22 million
-- Sierra Nevada Corporation, Louisville, Colo., $80 million
-- Space Exploration Technologies (SpaceX), Hawthorne, Calif., $75 million
-- The Boeing Company, Houston, $92.3 million

"We're committed to safely transporting U.S. astronauts on American-made spacecraft and ending the outsourcing of this work to foreign governments," NASA Administrator Charles Bolden said. "These agreements are significant milestones in NASA's plans to take advantage of American ingenuity to get to low-Earth orbit, so we can concentrate our resources on deep space exploration." The goal of CCDev2 is to accelerate the availability of U.S. commercial crew transportation capabilities and reduce the gap in American human spaceflight capability. Through this activity, NASA also may be able to spur economic growth as potential new space markets are created.

Once developed, crew transportation capabilities could become available to commercial and government customers. "The next American-flagged vehicle to carry our astronauts into space is going to be a U.S. commercial provider," said Ed Mango, NASA's Commercial Crew Program manager. "The partnerships NASA is forming with industry will support the development of multiple American systems capable of providing future access to low-Earth orbit." 

NASA Nanosatellite Celebrates 100 Days In Space Studying Life

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More than one hundred days ago, on Nov. 19, 2010, NASA sent a small satellite about the size of a loaf of bread on an important mission to answer astrobiology’s fundamental questions about the origin, evolution and distribution of life in the universe. Since then, the nanosatellite, known as Organism/Organic Exposure to Orbital Stresses (O/OREOS) continues on its quest, which has taken it just about everywhere between the Arctic and Antarctic Circles more than 400 miles above Earth's surface. O/OREOS weighs approximately 12 pounds and is NASA’s first CubeSat to demonstrate the capability to have two distinct, completely independent science experiments on a single autonomous satellite.

O/OREOS is using NASA’s first propellant-less mechanism on a scientific satellite to ensure it de-orbits and burns up as it re-enters Earth’s atmosphere, less than 25 years after completing its mission. It's also the first nanosatellite to not only operate, but also conduct autonomous biological and chemical measurements, in the region of space known as the exosphere. "The fact that we're getting consistently good science data in such a challenging environment tells us that secondary payload nanosatellites like O/OREOS can be made rugged enough to enhance our opportunities to conduct research in low Earth orbit," said Antonio Ricco, instrument scientist for O/OREOS and a researcher at NASA's Ames Research Center, Moffett Field, Calif. "This is enabling us to study organics, microorganisms, and astrobiology in the space environment in real time."

O/OREOS was a secondary payload aboard a U.S. Air Force four-stage Minotaur IV rocket launched from the Alaska Aerospace Corporation’s Kodiak Launch Complex on Kodiak Island, Alaska. After O/OREOS separated from the rocket and successfully entered low Earth orbit, it activated and began transmitting radio signals to ground control stations and spacecraft operators in the mission control center at Santa Clara University, Santa Clara, Calif. Nearly daily two-way communications with the spacecraft provided valuable information about its health, status and science data, and have given scientists the ability to fine tune the science payloads’ operating parameters.

Boiling Bubbles are Cool in Space

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It may seem illogical, but boiling is a very efficient way to cool engineering components and systems used in the extreme environments of space. An experiment to gain a basic understanding of this phenomena launched to the International Space Station on space shuttle Discovery Feb. 24. The Nucleate Pool Boiling Experiment, or NPBX, is one of two experiments in the new Boiling eXperiment Facility, or BXF. Nucleate boiling is bubble growth from a heated surface and the subsequent detachment of the bubble to a cooler surrounding liquid. As a result, these bubbles can efficiently transfer energy from the boiling surface into the surrounding fluid. This investigation provides an understanding of heat transfer and vapor removal processes that happen during nucleate boiling in microgravity.

Researchers will glean information to better design and operate space systems that use boiling for efficient heat removal. Bubbles in microgravity grow to different sizes than on Earth. This experiment will focus on the dynamics of single and multiple bubbles and the associated heat transfer. NPBX uses a polished aluminum wafer, powered by heaters bonded to its backside, and five fabricated cavities that can be controlled individually. The experiment will study single and/or multiple bubbles generated at these cavities. It will measure the power supplied to each heater group, and cameras will record the bubble dynamics. Analysis of the heater power data and recorded images will allow investigators to determine how bubble dynamics and heat transfer differ in microgravity.

"With boiling, the size and weight of heat exchange equipment used in space systems can be significantly reduced," said Vijay Dhir, the experiment's principal investigator at the University of California, Los Angeles. "Boiling and multiphase heat transfer is an enabling technology for space exploration missions including storage and handling of cryogenic, or extremely low temperature liquids, life support systems, power generation and thermal management." "The cost of transporting equipment to space depends on the size and weight of the equipment," added David Chao, the project scientist from NASA's Glenn Research Center in Cleveland. "The knowledge base that will be developed through the experiment will give us the capability to achieve cooling of various components and systems used in space in an efficient manner and could lead to smaller and lighter spacecraft." 

NASA Budget Plan limit spend On Private Rockets

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The Obama administration's proposed 2012 National Aeronautics and Space Administration budget, estimated to total more than $18.5 billion, scales back funding for private rockets and spacecraft future to take astronauts into orbit, according to government and industry officials. The White House's expenses plan for manned space exploration seeks to avoid last year's argument between Congress and President Barack Obama, according to government and industry officials. Slated to be released Monday, it also imagine step up international cooperation, despite widespread space and scientific budget cutback in Europe.

Mr. Obama's earlier bid to slash the agency's customary manned programs for allegedly being too slow and costly sparked opposition on Capitol Hill. Lawmakers also balked at White House proposal to outsource some core NASA functions by shifting much of the agency's focus to encourage what have been called business space taxis. This time, these officials said, the agency's request is likely to track main element of a bipartisan compromise Congress finally approved last year. That package limited funding for commercial-space efforts but recognized about $11 billion over five years substantially more than the White House requested to accelerate government growth of heavy lift rockets able to reach deeper into space.

For 2012, the bipartisan contract envision roughly $18.7 billion in overall NASA expenditures. Last week, Lori Garver, NASA's deputy administrator, told an industry meeting in Washington that the new budget would be broadly reliable with that compromise, though she didn't elaborate. Days later, Rep. Frank Wolf, the Virginia Republican who heads the House appropriations subcommittee with right over NASA, said the agency was "just wallowing" and lawmakers have been "concerned about the administration's hostility toward manned spaceflight." Commercial space development are years behind plan, and critic still worry about placing undue reliance on them.

With A-List Help, Glory Aims to Unravel Uncertainties About Aerosols

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Engineers and technicians at Vandenberg Air Force base, Calif., are preparing the Earth observing satellite Glory for launch on Feb. 23. In orbit, the satellite's two science instruments will study key aspects of the climate that will help make it possible to produce more accurate global and regional climate models. Last week, a team from Orbital Sciences Corporation stowed the Glory spacecraft in a protective nose cone called the payload fairing. The payload fairing, a two-pieced and bullet-shaped part, will shield Glory from the intense aerodynamic pressures and heating that Glory's launch vehicle will encounter during its ascent.

After the successful completion of these encapsulation operations, Glory was transported to an outdoor processing tent near the launch pad. Following its arrival, engineers attached the satellite and payload fairing to the third stage of a Taurus XL, the four-stage, solid-fuel launch vehicle that will propel Glory into orbit. At first glance, the Glory spacecraft might look unassuming. At 1.9 meters (6.2 feet) by 1.4 meters (4.6 feet), Glory is neither the largest nor the heaviest of NASA’s Earth-observing satellites. The whole of the Glory spacecraft which is set to launch from Vandenberg on Feb. 23 at 2:09 a.m. Pacific Standard Time (PST) is not much taller than most people or wider than an oil barrel. It weighs about 528 kilograms (1,164 pounds), about half the weight of a vintage Volkswagen Beetle.

Despite its small size, Glory will deploy an innovative aerosol sensing instrument called the Aerosol Polarimetry Sensor (APS) that many specialists predict will produce dramatic improvements in measuring airborne particles, as well as an important sensor that will help maintain a 32-year record of the sun's irradiance. And, in Glory's case, the value of the mission exceeds that of its parts because the spacecraft will fly in formation with a group of other Earth observing satellites known as the A-Train. For most people, "A-Train" likely conjures up visions of jazz legend Billy Strayhorn or perhaps New York City subway trains rather than climate science, but the little-known convoy of satellites has emerged as a critical tool for climatologists.

Taurus XL Ready to Launch Glory Spacecraft

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The Glory spacecraft and its Taurus XL launch vehicle are coming together at Vandenberg Air Force Base in California as NASA gets ready to launch its first Launch Services Program mission of 2011. Researchers are looking for more puzzle pieces to fill out the picture of Earth's climate and Glory was designed to give them the pieces relating to the role tiny particles known as aerosols play in the planet's weather. The spacecraft, about the size of a refrigerator, is also equipped with an instrument to measure the sun's impact on Earth's conditions. Glory is to lift off Feb. 23 at 5:09 a.m. EST. "The Glory satellite will help us understand the interaction of what's called aerosols in our environment," said Chuong Nguyen, LSP's mission integration manager for Glory.

The particles Glory will measure are small enough to float in the atmosphere and affect weather conditions by either absorbing sunlight or reflecting it. The particles can also affect rain patterns by seeding clouds and have other effects. The Glory mission is to also find out how long-lasting the effects for aerosols and how far their effects reach. The effects of some aerosols are limited to those parts of the world that generate them. For example, cities in developing nations often produce the most "black carbon," or soot, and it is in those areas that the effects are seen most dramatically, sometimes even in the form of health problems. However, other aerosols including dust from the Sahara desert, reach high enough into the air that they are transported across the oceans. In the case of the Sahara, its dust has been seen in the Caribbean.

While the spacecraft will get due attention, many eyes also will be on the Taurus XL rocket that will lift Glory. The four-stage, solid-fueled rocket was last used in February 2009 to launch the Orbiting Carbon Observatory. However, the payload fairing protecting the spacecraft during the early part of launch did not separate and the spacecraft never reached orbit. "Glory is going to do some fantastic stuff as far as mapping out aerosols in the atmosphere, but it's also a groundbreaker in that this is the first flight after a failure of the Taurus XL vehicle," said Omar Baez, launch director for the Glory mission. "So we're excited to be doing this and Glory just happens to be the science that we're taking up with us this time." Compared with other rockets that have launched many hundreds of times, the Taurus XL is quite young and Baez said the trouble with the last launch is part of any new system's growing pains.

NASA Image Shows La Nina-Caused Woes Down Under

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The current La Nina in the Pacific Ocean, one of the strongest in the past 50 years, continues to exert a powerful influence on weather around the world, affecting rainfall and temperatures in varying ways in different locations. For Australia, La Nina typically means above-average rains, and the current La Nina is no exception. Heavy rains that began in late December led to the continent's worst flooding in nearly a half century, at its peak inundating an area the size of Germany and France combined. The Associated Press reports about 1,200 homes in 40 communities are underwater and about 11,000 others are damaged, resulting in thousands of evacuations and 10 deaths to date.

On Jan. 7, 2010, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft captured this image of the inundated city of Rockhampton, Queensland, Australia. With a population of 75,000, Rockhampton is the largest city affected by the current flooding. Torrential rains in northeastern Australia caused the Fitzroy River to overflow its banks and flood much of the city and surrounding agricultural lands. Both the airport and major highways are underwater, isolating the city. In this natural color rendition, muddy water is brown, and shallow, clearer water is gray. Vegetation is depicted in various shades of green, and buildings and streets are white. The image is located at 23.3 degrees south latitude, 150.5 degrees east longitude, and covers an area of 22 by 28.1 kilometers (13.6 by 17.4 miles)

SOHO Spots 2000th Comet

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As people on Earth celebrate the holidays and prepare to ring in the New Year, an ESA/NASA spacecraft has quietly reached its own milestone: on December 26, the Solar and Heliospheric Observatory (SOHO) discovered its 2000th comet. Drawing on help from citizen scientists around the world, SOHO has become the single greatest comet finder of all time. This is all the more impressive since SOHO was not specifically designed to find comets, but to monitor the sun. "Since it launched on December 2, 1995 to observe the sun, SOHO has more than doubled the number of comets for which orbits have been determined over the last three hundred years," says Joe Gurman, the U.S. project scientist for SOHO at NASA's Goddard Space Flight Center in Greenbelt, Md.

Of course, it is not SOHO itself that discovers the comets that is the province of the dozens of amateur astronomer volunteers who daily pore over the fuzzy lights dancing across the pictures produced by SOHO's LASCO (or Large Angle and Spectrometric Coronagraph) cameras. Over 70 people representing 18 different countries have helped spot comets over the last 15 years by searching through the publicly available SOHO images online. The 1999th and 2000th comet were both discovered on December 26 by Michal Kusiak, an astronomy student at Jagiellonian University in Krakow, Poland. Kusiak found his first SOHO comet in November 2007 and has since found more than 100.

"There are a lot of people who do it," says Karl Battams who has been in charge of running the SOHO comet-sighting website since 2003 for the Naval Research Lab in Washington, where he also does computer processing for LASCO. "They do it for free, they're extremely thorough, and if it wasn't for these people, most of this stuff would never see the light of day." Battams receives reports from people who think that one of the spots in SOHO's LASCO images looks to be the correct size and brightness and headed for the sun characteristics typical of the comets SOHO finds. He confirms the finding, gives each comet an unofficial number, and then sends the information off to the Minor Planet Center in Cambridge, Mass, which categorizes small astronomical bodies and their orbits.

Contract Marks New Generation for Deep Space Network

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NASA has taken the next step toward a new generation of Deep Space Network antennas. A $40.7 million contract with General Dynamics SATCOM Technologies, San Jose, Calif., covers implementation of two additional 34-meter (112-foot) antennas at Canberra, Australia. This is part of Phase I of a plan to eventually retire the network's aging 70-meter-wide antennas. The Deep Space Network (DSN) consists of three communications complexes: in Goldstone, Calif.; Madrid, Spain; and Canberra, Australia. The 70-meter antennas are more than 40 years old and are showing signs of surface deterioration from constant use. Additional 34-meter antennas are being installed in Canberra in the first phase; subsequent phases will install additional 34-meter antennas in Goldstone and Madrid.

The 34-meter beam waveguide antennas are essential to keep communications flowing smoothly as NASA's fleet of spacecraft continues to expand. In addition, the waveguide design of the antennas provides easier access for maintenance and future upgrades, because sensitive electronics are housed in a below-the-ground pedestal equipment room, instead of in the center of the dish. "As a result of several studies, it was determined that arrays of 34-meter beam waveguide antennas were the best solution to long-term continuation of DSN 70-meter capabilities," said Miguel Marina, who manages the 70-meter replacement task force at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "The new antennas are critical communication resources for all current and future NASA missions."

NASA expects to complete the building of the first two 34-meter antennas in Canberra by 2016. They will be named Deep Space Stations 35 and 36. Deep Space Station 35 is due to be online in 2014, and Deep Space Station 36 is expected to follow in 2016. In 1958, NASA established the Deep Space Network as a separately managed and operated communications facility to accommodate all deep space missions. This avoided the need for each flight project to acquire its own specialized space communications network. During the Apollo period (1967-1972), these stations supported America's missions to the moon, including the historic first manned landing. The Goldstone antenna, in particular, captured Neil Armstrong's words and sent them on to American television sets while the images came through another antenna.