Aug 1 2011
From The Space Library
MEDIA ADVISORY: M11-161 NASA TELEVISION TO BROADCAST SPACE STATION SPACEWALK
HOUSTON --Two cosmonauts will conduct a six-hour spacewalk on Wednesday, Aug. 3, to continue outfitting the Russian segment of the International Space Station. NASA Television will broadcast the spacewalk beginning at 9 a.m. CDT. Expedition 28 Russian Flight Engineers Sergei Volkov and Alexander Samokutyaev will install laser communications equipment and replace experiments on the Zvezda service module. They also will retrieve a rendezvous antenna, relocate a boom structure to aid future spacewalks and deploy a small satellite equipped with an amateur radio transmitter and a student-built experiment. The duo will wear Russian Orlan spacesuits and will emerge from the Pirs docking compartment airlock at about 9:30 a.m. The spacewalk will be the third for Volkov, who performed two spacewalks as Expedition 17 commander in 2008. This will be the first spacewalk for Samokutyaev.
RELEASE: 11-252 HERSCHEL TELESCOPE DETECTS OXYGEN MOLECULES IN SPACE
WASHINGTON -- The Herschel Space Observatory's large telescope and state-of-the-art infrared detectors have provided the first confirmed finding of oxygen molecules in space. The molecules were discovered in the Orion star-forming complex. Individual atoms of oxygen are common in space, particularly around massive stars. But, molecular oxygen, which makes up about 20 percent of the air we breathe, has eluded astronomers until now. "Oxygen gas was discovered in the 1770s, but it's taken us more than 230 years to finally say with certainty that this very simple molecule exists in space," said Paul Goldsmith, NASA's Herschel project scientist at the agency's Jet Propulsion Laboratory (JPL) in Pasadena, Calif. Goldsmith is lead author of a recent paper describing the findings in the Astrophysical Journal. Herschel is a European Space Agency-led mission with important NASA contributions. Astronomers searched for the elusive molecules in space for decades using balloons, as well as ground- and space-based telescopes. The Swedish Odin telescope spotted the molecule in 2007, but the sighting could not be confirmed. Goldsmith and his colleagues propose that oxygen is locked up in water ice that coats tiny dust grains. They think the oxygen detected by Herschel in the Orion nebula was formed after starlight warmed the icy grains, releasing water, which was converted into oxygen molecules. "This explains where some of the oxygen might be hiding," said Goldsmith. "But we didn't find large amounts of it, and still don't understand what is so special about the spots where we find it. The universe still holds many secrets." The researchers plan to continue their hunt for oxygen molecules in other star-forming regions. "Oxygen is the third most common element in the universe and its molecular form must be abundant in space," said Bill Danchi, Herschel program scientist at NASA Headquarters in Washington. "Herschel is proving a powerful tool to probe this unsolved mystery. The observatory gives astronomers an innovative tool to look at a whole new set of wavelengths where the tell-tale signature of oxygen may be hiding." Herschel is a European Space Agency cornerstone mission, with science instruments provided by consortia of European institutes. NASA's Herschel Project Office is based at JPL, which contributed mission-enabling technology for two of Herschel's three science instruments. The NASA Herschel Science Center, part of the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena, supports the U.S. astronomical community. Caltech manages JPL for NASA.
RELEASE: 11-255 NASA INVITES 150 LUCKY TWITTER FOLLOWERS TO LAUNCH OF JUPITER-BOUND SPACECRAFT
WASHINGTON -- NASA has invited 150 followers of the agency's Twitter account to a two-day launch Tweetup Aug. 4-5. The event is expected to culminate in the lift off of the Jupiter-bound Juno spacecraft aboard an Atlas V rocket from the Cape Canaveral Air Force Station in Florida. The launch window opens at 11:34 a.m. EDT on Friday, Aug. 5. The spacecraft is expected to arrive at Jupiter in 2016 to investigate the gas giant's interior, atmosphere and aurora. Juno's color camera will provide close-up images of Jupiter, including the first detailed glimpse of the planet's poles. Attendees represent 28 states, the District of Columbia and five other countries: Canada, Finland, Norway, Spain and the United Kingdom. NASA randomly selected the participants from more than 1,200 online applicants. Tweetup participants are coming from Alabama, Alaska, Arizona, California, Colorado, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, and Washington. They will share their Tweetup experiences with their followers through the social networking site Twitter. Beginning at 10:30 a.m. on Thursday, Aug. 4, NASA will broadcast a portion of the Tweetup when participants get to talk with Waleed Abdalati, chief scientist at NASA Headquarters; Jim Adams, deputy director, Planetary Science, NASA Headquarters; Scott Bolton, Juno's principal investigator; Steve Levin, Juno project scientist; Juno Science Team members Toby Owen, Fran Bagenal, and Dave Stevenson; Steve Matousek, Juno proposal manager; Jan Chodas, Juno project manager; and Chris Brosious, chief systems engineer for Juno at Lockheed Martin. Participants also will tour NASA's Kennedy Space Center and Cape Canaveral, including a close-up visit to the launch pad. This is the first time NASA has invited Twitter followers to experience the launch of a planetary spacecraft. Previously, NASA invited groups to attend five space shuttle launches: Atlantis' STS-129, STS-132 and STS-135 missions, Discovery's STS-133 mission, and Endeavour's STS-134 mission.
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