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    Post Astronomical News

    Hello.
    I want to put this post to talk about latest news around astronomy, Its a new astronomical news page......
    I'll appreciate if u help me with this post........


    Thank u All
    ویرایش توسط planetstruck : 04-11-2011 در ساعت 09:36 AM دلیل: Adding words,Correcting Grammar points


  2. Top | #11
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    Seven News :Cold Weather Postpones Tanking Test

    An instrumented test of space shuttle Discovery’s external fuel tank now will be conducted no earlier than Friday, Dec. 17, because wind and cold conditions at NASA's Kennedy Space Center prevented technicians from completing preparations for the test.

    The forecast for the next several days calls for continuing cold conditions at Launch Pad 39A at the Florida spaceport. Technicians worked through the weekend to place dozens of sensors on the tank's ribbed intertank region so engineers can analyze temperature and tank movement as the tank is filled with cryogenic propellants. All the strain gauges have been attached in the intertank region near the top of the external tank where the stringers are located. Once the remaining temperature sensors are in place and foam insulation has been reapplied, the tank will be filled with about 535,000 gallons of liquid hydrogen and liquid oxygen to help verify repairs associated with cracks on the tops of two 21-foot-long, U-shaped aluminum brackets, called stringers, on the external tank and help engineers determine what caused the cracks in the first place.



    Discovery’s STS-133 mission to the International Space Station. Discovery’s next launch opportunity is no earlier than Feb. 3 at 1:34 a.m. EST.
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  4. Top | #12
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    VIII News : Rollout

    The Soyuz TMA-20 spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome, Monday, Dec. 13, 2010, in Kazakhstan. The launch of the Soyuz spacecraft with Expedition 26 Soyuz Commander Dmitry Kondratyev, NASA Flight Engineer Catherine Coleman and Italian astronaut Paolo Nespoli is scheduled for Wednesday, Dec. 16. Image Credit: NASA/Carla Cioffi
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  6. Top | #13
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    Nine News: Call to Stations Expected This Afternoon

    The call to stations at NASA's Kennedy Space Center is expected to begin this afternoon as the launch team takes its place for a tanking test scheduled to begin no earlier than Wednesday, Dec. 15. Technicians at Launch Pad 39A also are preparing space shuttle Discovery for the test which calls for dozens of instruments to be placed on the ribbed intertank region of Discovery's external tank.

    The test will help verify repairs associated with cracks on the tops of two 21-foot-long, U-shaped aluminum brackets, called stringers, on the external tank and help engineers determine what caused the cracks in the first place. Technicians repaired the cracks and reapplied foam insulation on the stringers last month.

    Discovery’s STS-133 mission to the International Space Station. Discovery’s next launch opportunity is no earlier than Feb. 3 at 1:34 a.m. EST.
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  8. Top | #14
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    News XI: NASA Awards Space Station Cargo Mission Services Contract

    NASA has awarded a contract with a potential value of $171 million to Lockheed Martin Corp. of Gaithersburg, Md., for support of International Space Station cargo mission services.
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    Twelfth News

    Hot Cities, Ice Volcanoes And California Quakes Among NASA News Highlights At American Geophysical Union Meeting

    NASA researchers will present new findings on a wide range of Earth and space science topics at the 2010 fall meeting of the American Geophysical Union.
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    Xiii News

    How long is a minute? It is longer than you think when it is filled with fire, steam and noise – lots of noise.


    On Dec. 17, at NASA's John C. Stennis Space Center, a team of operators from Stennis, Orbital Sciences Corporation and Aerojet filled 55 seconds with all three during the second verification test fire of an Aerojet AJ26 rocket engine. Once verified, the engine will be placed on a Taurus II space vehicle and used to launch a cargo supply mission to the International Space Station.

    It is all part of NASA’s effort to partner with commercial companies to provide space flights through the Commercial Orbital Transportation Services joint research and development project. Through that program, Orbital has agreed to provide eight cargo supply missions to the space station by 2015. Stennis has partnered with Orbital to test the engines that will power the missions.

    So, when Orbital’s Taurus II space vehicle lifts off, it will do so on engines proven flight worthy at Stennis. That is a big responsibility, but it is one which engine test personnel at Stennis are used to filling. They tested engines for every manned Apollo space flight and all of the engines used on more than 130 space shuttle missions.
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    XIV's : NASA's LRO Creating Unprecedented Topographic Map of Moon

    NASA's Lunar Reconnaissance Orbiter is allowing researchers to create the most precise and complete map to date of the moon's complex, heavily cratered landscape.


    "This dataset is being used to make digital elevation and terrain maps that will be a fundamental reference for future scientific and human exploration missions to the moon," said Dr. Gregory Neumann of NASA's Goddard Space Flight Center in Greenbelt, Md. "After about one year taking data, we already have nearly 3 billion data points from the Lunar Orbiter Laser Altimeter on board the LRO spacecraft, with near-uniform longitudinal coverage. We expect to continue to make measurements at this rate through the next two years of the science phase of the mission and beyond. Near the poles, we expect to provide near-GPS-like navigational capability as coverage is denser due to the spacecraft's polar orbit." Neumann will present the map at the American Geophysical Union meeting in San Francisco December 17.

    The Lunar Orbiter Laser Altimeter (LOLA) works by propagating a single laser pulse through a Diffractive Optical Element that splits it into five beams. These beams then strike and are backscattered from the lunar surface. From the return pulse, the LOLA electronics determines the time of flight which, accounting for the speed of light, provides a precise measurement of the range from the spacecraft to the lunar surface. Range measurements, combined with accurate tracking of the spacecraft's location, are used to build a map revealing the contours of the lunar landscape. The five beams create a two-dimensional spot pattern that unambiguously reveals slopes. LOLA will also measure the spreading of the return pulse to get the surface roughness and the change in the transmitted compared to the return energy of the pulse to determine surface reflectance.

    The new LOLA maps are more accurate and sample more places on the lunar surface than any available before. "The positional errors of image mosaics of the lunar far side, where direct spacecraft tracking – the most accurate -- is unavailable, have been one to ten kilometers (about 0.62 to 6.2 miles)," said Neumann. "We're beating these down to the level of 30 meters (almost 100 feet) or less spatially and one meter (almost 3.3 feet) vertically. At the poles, where illumination rarely provides more than a glimpse of the topography below the crater peaks, we found systematic horizontal errors of hundreds of meters (hundreds of yards) as well." In terms of coverage, the nearly three billion range measurements so far by LRO compare to about eight million to nine million each from three recent international lunar missions, according to Neumann. "They were limited to a mile or so between individual data points, whereas our measurements are spaced about 57 meters (about 187 feet) apart in five adjacent tracks separated by about 15 meters (almost 50 feet)."

    "Recent papers have clarified some aspects of lunar processes based solely on the more precise topography provided by the new LOLA maps," adds Neumann, "such as lunar crater density and resurfacing by impacts, or the formation of multi-ring basins."

    "The LOLA data also allow us to define the current and historical illumination environment on the moon," said Neumann. Lunar illumination history is important for discovering areas that have been shaded for long periods. Such places, typically in deep craters near the lunar poles, act like cold storage, and are capable of accumulating and preserving volatile material like water ice.

    The landscape in polar craters is mysterious because their depths are often in shadow. The new LOLA dataset is illuminating details of their topography for the first time. "Until LRO and the recent Japanese Kaguya mission, we had no idea of what the extremes of polar crater slopes were," said Neumann. "Now, we find slopes of 36 degrees over several kilometers (several thousands of yards) in Shackleton crater, for example, which would make traverses quite difficult and apparently causes landslides. The LOLA measurements of shadowed polar crater slopes and their surface roughness take place at scales from lander size to kilometers. These measurements are helping the LRO science team model the thermal environment of these craters, and team members are developing temperature maps of them."

    LRO and LOLA were built and are managed by NASA Goddard. The research was funded by NASA's Exploration Systems Mission Directorate at NASA Headquarters in Washington.
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  16. Top | #18
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    This Year @ NASA, 2010 Part 1

    For NASA, 2010 was another year of new exploration, exciting discoveries, and important milestones.


    From spaceflight, to science and technology; from understanding life here on Earth, to where we might find it elsewhere. From protecting our home planet, to inspiring the next generation of explorers.


    This was "This Year at NASA."

    SPACEFLIGHT
    The December 15th launch of the Soyuz spacecraft carrying Expedition 26 crew members Cady Coleman, Paolo Nespoli and Dimitry Kondratyev to the International Space Station capped another year of important milestones for the orbiting complex – and NASA’s space shuttle program, as the retirement of its fleet of orbiters approaches its retirement.

    DOWN TO EARTH – JSC

    Astronaut: "All right give me a smile."

    Expedition 22 Commander Jeff Williams and Flight Engineer Max Suraev made a safe return to Earth in a Soyuz spacecraft which landed on the remote steppes of Kazakhstan.

    Russian recovery teams worked in frigid temperatures to help the crew exit the spacecraft and begin their readjustment to Earth’s gravity.

    NEW CREWMATES JOIN EXPEDITION 23 – JSC

    Launch Announcer: "Liftoff of Alexander Skvortsov, Tracy Caldwell Dyson, and Mikhail Kornienko beginning their journey to the International Space Station."

    The new members of the Expedition 23 crew began their journey to the International Space Station with a successful launch from the Baikonur Cosmodrome in Kazakhstan. Soyuz Commander Alexander Skvortsov, Flight Engineers Mikhail Kornienko and Tracy Caldwell Dyson will spend the next six months aboard the orbiting complex.

    SAFE RETURN – JSC
    The crew of STS-131 returned home to Houston following their fifteen days in space aboard shuttle Discovery.

    Mike Coates: "Nice landing. Well done."

    A crowd of several hundred well-wishers greeted the seven astronauts at Ellington Field after their flight from the Kennedy Space Center one day after their safe landing.

    PAD ABORT 1 LAUNCH – DFRC --

    Launch Announcer: "4-3-2-1, launch, launch, launch."

    The first test of the fully integrated Launch Abort System for the Orion crew vehicle was successfully completed at the White Sands Missile Range on May 6. The Pad Abort 1 test is part of an ongoing mission to develop safer vehicles for human spaceflight applications.

    SHUTTLE RETURN – KSC
    Carrying a six-astronaut crew – STS-132 Commander Ken Ham, Pilot Tony Antonelli and Mission Specialists Garrett Reisman, Steve Bowen, Mike Good and Piers Sellers, space shuttle Atlantis concluded its final flight, a 12-day trip to the International Space Station with a smooth landing at the Kennedy Space Center.

    "And Houston/Atlantis we have wheel stop. Copy wheel stop Atlantis. That landing was something that your air force crewmates should of really been proud of; that was pretty sweet."

    COOL UNDER PRESSURE – JSC
    Bill Hardwood: "I think what a lot of us are wondering about is making sure that everything is up and running again."

    Tracy Caldwell: "Shannon and Doug removed the last jumpers today and put the racks back and so it’s all spic and span and it’s back to business as usual it seems."

    The International Space Station’s cooling system was reactivated and finally back in normal operation.

    Mission Control: "The pump is looking good."

    Doug Wheelock: "Oh, Sweet! We got our station back!"

    Three spacewalks by Expedition 24 Flight Engineers Doug Wheelock and Tracy Caldwell Dyson were needed to remove and replace a failed ammonia pump that had disabled one of the station’s two cooling loops on July 31.

    Tracy Caldwell: "I’ll pull it."

    Doug Wheelock: "There you can see it."

    Mission Control: "Yep I see."

    EXPEDITION 25 HEADS TO STATION

    Launch Announcer: "3-2-1 fueling tower separates, booster ignition, and liftoff of the Soyuz Rocket with Alexander Kaleri, Scott Kelly and Oleg Skripochka began their journey to the International Space Station."

    Following several days of traditional pre-launch activities and preparations, the Expedition 25 crew successfully launched aboard a Soyuz TMA-01M rocket on October 7, beginning a two-day journey to the International Space Station. Soyuz Commander Alexander Kaleri, NASA Flight Engineer Scott Kelly and Russian Flight Engineer Oleg Skripochka are joining Commander Doug Wheelock and Flight Engineers Fyodor Yurchikhin and Shannon Walker, who have been in orbit since June.

    SPACEX LAUNCH – KSC
    The first SpaceX Falcon 9 demonstration launch for NASA's Commercial Orbital Transportation Services program lifted off on Wednesday, Dec. 8 from Launch Complex 40 at Cape Canaveral Air Force Station in Florida.

    Launch Announcer: "We have liftoff of Falcon 9 stage one."

    Known as COTS 1, the launch is the first flight of the Dragon spacecraft and the first commercial attempt to re-enter a spacecraft from orbit. The demonstration mission proved key capabilities such as launch, structural integrity of the Dragon spacecraft, on-orbit operation, re-entry, descent and splashdown in the Pacific Ocean.

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    PRESIDENT OBAMA

    As he did in 2009, President Obama made several calls from the White House to astronauts in space…

    But 2010 also saw the president visit the Kennedy Space Center in Florida to present his plans for NASA and reaffirm his support for space exploration.

    PRESIDENT CALLS SPACE STATION – HQ

    President Obama: "Hey guys!"

    President Obama spoke with the crews of space shuttle Endeavour and the International Space Station from the Roosevelt Room of the White House.

    President Obama: "I think I speak for the all young people here, and everybody back home how proud we are of you, how excited we are about the work that is being done on the Space Station, and how committed we are to continuing human space exploration in the future."

    PRESIDENT OBAMA’S VISIT – KSC

    President Barack Obama made a trip to the Kennedy Space Center on Thursday to explain his plan for America’s space program. Accompanied by Florida Senator and former shuttle astronaut Bill Nelson, Apollo astronaut Buzz Aldrin, and NASA Administrator Charles Bolden, President Obama addressed an audience comprised of elected officials, leaders from industry, academia and KSC employees.

    President Obama: "I am 100% Committed to the mission of NASA and its future. (applause) Because broadening our capabilities in space will continue to serve our society in ways we can scarcely imagine. Because exploration will once more inspire wonder in a new generation: sparking passions, launching careers. And because, ultimately, if we fail to press forward in the pursuit of discovery, we are ceding our future, ceding that essential element of the American character."

    "EDUCATE TO INNOVATE"

    Administrator Charlie Bolden joined President Obama at a special White House ceremony honoring educators from across the country for their excellence in mathematics, science teaching and mentoring. The event was part of the President’s “Educate to Innovate” campaign to boost student achievement in STEM subjects: science, technology, engineering and math.

    President Obama: "I've challenged the scientific community to think of new and creative ways to engage young people in their fields. That's why we launched the "Educate to Innovate" campaign -- a nationwide effort by citizens, non-for-profits, universities, and companies from across America to help us move to the top of the pack in math and science education."

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    EDUCATION

    Through a combination of hands-on projects, creative partnerships and public appearances, NASA continued to promote the education of our youth in science, technology, engineering, and math, the STEM disciplines so important to our nation’s future.

    NASA SUPPORTS "ES EL MOMENTO" – HQ
    NASA is teaming with Univision Communications Inc, the Department of Education and other organizations to support Univision’s initiative to improve Hispanic students high school graduation rates, prepare for college and encourage them to pursue careers in science, technology, engineering and mathematics.

    Charlie Bolden: "It’s a great extension of the efforts that we’ve been making to foster STEM education to support the President’s ‘Educate to Innovate’ program, the ‘Race to the Top’; it all fits together for us. This program is designated, primarily, to reach kids in the high school area, but I think with our ‘Summer of Innovation’ that’s focused on kids in middle schools, they are kind of a perfect marriage."

    STEM EDUCATORS WORKSHOP – LARC
    Teachers became students while participating in the second annual NASA Science, Technology, Engineering, and Mathematics -- STEM -- Educators, Workshops held this year in Charlotte, N.C. The 40-session workshop provided elementary, middle and high school teachers with creative hands-on ways to incorporate NASA content into their classrooms.

    TECH TREK – DFRC

    About 25 seventh-grade girls from area middle schools got up close and personal with unique aircraft and high technology when they participated in a "Tech Trek" tour of the Dryden Flight Research Center.

    The Tech Trek, to develop interest and excitement about math and science and self-confidence among middle-school girls, included tours of Dryden's main aircraft hangar and several specialized research and support aircraft.

    PREPARING NEXT GENERATION EXPLORERS – ARC
    Dozens of teachers are conducting real science in an extreme environment. Through Ames Research Center’s Spaceward Bound project, NASA has sent teachers to California State University’s Desert Study Center in Zzyzx. (nat) Here, on the edge of the barren Mojave Desert, they help conduct NASA-related field science. The data and knowledge they glean at Zzyzx will be used to develop experiments, demonstrations and lesson plans for their students.

    A CALL TO ACTION – HQ

    NASA Administrator Charles Bolden joined with other NASA volunteers in helping these fifth graders become rocket scientists for day.

    The students at the Langdon Elementary School in Washington built and test flew their own paper rockets using a high-power paper rocket launcher.

    A STIMULATING EXPERIENCE – HQ

    Leland Melvin: "Please give a warm welcome to Charlie Bolden."

    Charles Bolden: "Allright, Allright, Allright. Hi ya doing?"

    More than 250 students joined with astronaut Leland Melvin and Administrator Charles Bolden at the Jet Propulsion Laboratory to help kickoff NASA’s Summer of Innovation.

    Bolden: "What we want to do this summer through the Summer of Innovation is take young men and women like Malik and we want them understand, yeah science and math may be difficult, but you can learn it."

    NASA’s "SUMMER OF INNOVATION" DRAWS STARS – ARC
    Also, over the Labor Day weekend, actor/rapper Mos Def and astronaut Leland Melvin teamed up to share NASA’s Summer of Innovation program with young people at the Instituting Science in Schools Science and Cultural Festival at the Chabot Observatory in Oakland, California, and people attending the Tom Joyner Morning Show Family Reunion in Orlando, Florida.

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    NASA IN THE COMMUNITY

    AL NARRATION: Once again, NASA employees proved the importance of community involvement. Centers threw open their doors to neighbors, and reached out to make new friends for the agency. NASA also provided technological assistance to a region of our country threatened with ecological disaster, and expertise to another member of the global community in their time of grave need.

    ASSESSING IMPACT – GSFC/DFRC
    NASA assets continue to help scientists track two events causing worldwide environmental and economic concern. NASA’s instrumented research aircraft, the Earth Resources-2, or ER-2, has been deployed to the Gulf of Mexico to do flyovers of the Deepwater Horizon BP oil spill and the coastline it threatens. The agency is also making extra satellite observations and conducting additional data processing to help U.S. disaster response agencies assess the spread and impact of the slick.

    TURTLE HATCHLINGS RELEASED – KSC

    "Okay guys, let’s go!"

    The first hatchlings from endangered sea turtle eggs at possible risk by the BP oil spill were released into the Atlantic Ocean off the Kennedy Space Center on July 11.

    "There they go. Yeah! That’s awesome."

    After their collection at a Florida Panhandle beach, the eggs of twenty-two Kemp’s ridley turtles were brought to a secure, climate-controlled facility at Kennedy where the nest was monitored until incubation was complete.

    NASA INSPIRES MEXICAN STUDENT – HQ

    When she was just six years old, Carolina Gallardo fell in love with the night sky. As a teenager, the young woman from a poor family near Mexico City watched a television show about astronomy and the Hubble Space Telescope that would make the stars her life’s work. Carolina, then thirteen, was so inspired by Ed Weiler, the NASA scientist featured on the program that she initiated a correspondence with him that would encourage her studies for years to come.

    Now, at age 30, Carolina Gallardo has finished a summer internship at the Goddard Space Flight Center to complete masters’ programs in aeronautics/astronautics and space technology. A special guest at the Science Mission Directorate’s monthly meeting at Headquarters, Caroline told senior managers how Weiler, now the directorate’s Associate Administrator and others at NASA have impacted her life.

    Caroline Gallardo: "Now I graduate with two Masters in aerospace and I can say that thanks to you, thanks to your challenge, to your motivation, I can tell everyone that if it wasn’t for you, I wouldn’t have gone this far. Thank you very much."

    PRESIDENT RECOGNIZES NASA TEAM – HQ

    NASA Administrator Charles Bolden and the NASA team that traveled to Chile to assist the once-trapped miners met with President Obama on Oct. 28 in the White House Oval Office. The team advised Chilean rescue officials on how to maintain the psychological and physiological well-being of the 33 miners trapped a half-mile beneath the Earth’s surface, as well as the design of the rescue capsule in which each man would finally ascend after 69 days underground.

    BUILDING FUTURES: NASA & LEGO – HQ
    For nearly eighty years, the LEGO "brick" has helped enhance children’s creativity through playing and learning. Now, NASA is teaming up with LEGO to develop innovative educational and outreach activities to interest youngsters in science, technology, engineering and mathematics. The collaboration, called “Build the Future, kicked off at Kennedy with youngsters building their vision of the future in space.

    CLIMATE STUDIES

    The continuing study of ice sheets in the Arctic was just one way NASA researchers added to the data about changes in temperatures and sea levels around the globe.

    "CLIMATE KIDS" – JSC
    A new NASA Web site can help our future explorers and leaders better understand the how’s and why’s of climate change – and what they can do to make our planet more habitable.

    Fish: "Kind of far south for a polar bear ain’t you?"

    Polar Bear: "You don’t say. Look, my habitat is shrinking and I obviously fell asleep on the wrong iceberg."

    Fish: "What you say?"

    Climate Kids can be found at http://climate.nasa.gov/kids

    OPERATION ICEBRIDGE: PHASE TWO – GSFC
    Operation IceBridge has entered the second phase of its spring 2010 campaign. NASA’s DC-8 aircraft has returned from Greenland to the Dryden Flight Research Center in California, following a successful survey of the entire Arctic Ocean. The plane flew from Thule, Greenland to Fairbanks, Alaska providing a detailed snapshot of sea ice conditions.

    NEW CLIMATE SIMULATERS UNVEILED – GSFC
    As this year’s hurricane season gets underway, the Goddard Space Flight Center has unveiled, for the media, NASA’s new climate simulation center. An amalgam of supercomputing, visualization, and data interaction technologies, the climate simulation center, supports weather and climate prediction research at one of the world’s largest contingents of Earth scientists.

    SCIENTISTS STUDY POLAR REGION – GSFC
    A NASA-sponsored mission in Alaska is exploring how changes in the Arctic’s sea ice cover may be contributing to global warming. ICESCAPE, for Impacts of Climate on Ecosystems and Chemistry of the Arctic Pacific Environment," is working its way through the Bering Strait headed for the Chukchi and Beaufort seas.

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    GOING GREEN
    From laboratory and wind tunnel research to demonstration tests, NASA Aeronautics continued its green aviation initiatives. Their goal: to make air travel quieter, cleaner and more efficient while increasing the safety and comfort of passengers.

    GREEN AVIATION SUMMIT – ARC
    The Ames Research Center was the scene of a gathering of experts from government, industry and academia meeting to discuss the agency’s green aviation research efforts

    Researcher: "…doing research in alternative bio-fuels."

    and showcase groundbreaking solutions NASA and its partners are developing to reduce the impact of aviation systems on the environment.

    Over a two day period, attendees heard researchers, scientists, technicians and leading policymakers, present on the latest emerging environmentally sensitive aviation technologies.

    Jaiwon Shin: "Please join us in welcoming our NASA Administrator, Mr. Bolden."

    NASA Administrator Charles Bolden addressed the group on day one of the event.

    Charles Bolden: "We’re so excited at NASA about the opportunities we’re being given, in the coming years, to help develop solutions to some of our most pressing aviation problems, and create the next generation of air transportation systems that will last generations and make us all safer and make the planet a better place That’s a huge challenge, but we at NASA enthusiastically accept it."

    Next week, more of This Year @NASA!
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    همیشه مراقب اشتباه دوم باش!
    اشتباه اول حق توست...!

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  18. Top | #19
    کاربر ممتاز

    عنوان کاربر
    کاربر ممتاز
    تاریخ عضویت
    Sep 2010
    شماره عضویت
    131
    نوشته ها
    506
    تشکر
    11,118
    تشکر شده 5,043 بار در 474 ارسال

    NASA Moves Forward In Commercial Rocket Engine Testing


    BAY ST. LOUIS, Miss. -- NASA conducted a test fire Friday of the liquid-fuel AJ26 engine that will power the first stage of Orbital Sciences Corp.'s Taurus II space launch vehicle. The test at the agency's Stennis Space Center in Mississippi supports NASA's Commercial Transportation Services partnerships to enable commercial cargo flights to the International Space Station.

    Orbital's Taurus II uses a pair AJ26 rocket engines built by Aerojet to provide first stage propulsion. Friday's test on the Stennis' E-1 test stand involved a team of Orbital, Aerojet, and Stennis engineers, with Stennis employees serving as test conductors.

    "Once again, the Orbital and Aerojet team have achieved a major milestone with the AJ26 engine," said Doug Cooke, associate administrator for the Exploration Systems Mission Directorate at NASA Headquarters in Washington. "This success moves Orbital closer to its goal of providing NASA with commercial space transportation services to the space station."

    The 55-second firing was the second in a series of verification tests being conducted at the south Mississippi facility. A third hot-fire test also is planned to verify tuning of engine control valves.

    "This second test of the AJ26 engine not only moves Orbital's commercial space transport plans a step ahead, but also demonstrates again the quality and versatility of Stennis facilities and the expertise of our test and support team," Stennis Director Patrick Scheuermann said.

    The AJ26 engine is designed to power the Taurus II space vehicle on flights to low Earth orbit. NASA's partnership with Orbital was formed under the agency's Commercial Orbital Transportation Services joint research and development project. The company is under contract with NASA to provide eight cargo missions to the space station through 2015.


    For more information about NASA exploration, visit: http://www.nasa.gov/exploration
    امضای ایشان
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    اشتباه اول حق توست...!

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  20. Top | #20
    کاربر فعال

    عنوان کاربر
    کاربر فعال
    تاریخ عضویت
    Aug 2010
    شماره عضویت
    76
    نوشته ها
    78
    تشکر
    68
    تشکر شده 352 بار در 66 ارسال

          Odyssey spacecraft sets exploration record on Mars

    Astronomical News         
    Odyssey's longevity enables continued science, including the monitoring of seasonal changes on Mars from year to year and the most detailed maps ever made of most of the planet.

    By NASA/JPL — Published: December 20, 2010
    NASA's Mars Odyssey, which launched in 2001, broke the record December 15 for longest-serving spacecraft at the Red Planet. Provided by NASA-JPL
    NASA's Mars Odyssey, which launched in 2001, broke the record December 15 for longest-serving spacecraft at the Red Planet. The probe began its 3,340th day in martian orbit at 8:55 p.m. EST on the 15th to break the record set by NASA's Mars Global Surveyor, which orbited Mars from 1997 to 2006.

    Odyssey's longevity enables continued science, including the monitoring of seasonal changes on Mars from year to year and the most detailed maps ever made of most of the planet. In 2002, the spacecraft detected hydrogen just below the surface throughout Mars' high-latitude regions. The deduction that the hydrogen is in frozen water prompted NASA's Phoenix Mars Lander mission, which confirmed the theory in 2008. Odyssey also carried the first experiment sent to Mars specifically to prepare for human missions, and found that radiation levels around the planet from solar flares and cosmic rays are 2 to 3 times higher than around Earth.

    Odyssey also has served as a communication relay, handling most of the data sent home by Phoenix and NASA's Mars Exploration Rovers Spirit and Opportunity. Odyssey became the middle link for continuous observation of martian weather by NASA's Mars Global Surveyor and NASA's Mars Reconnaissance Orbiter (MRO).

    Odyssey will support the 2012 landing of the Mars Science Laboratory (MSL) and surface operations of that mission. MSL will assess whether its landing area has had environmental conditions favorable for microbial life and preserving evidence about whether life has existed there. The rover will carry the largest, most advanced set of instruments for scientific studies ever sent to the martian surface.

    "The Mars program clearly demonstrates that world-class science coupled with sound and creative engineering equals success and longevity," said Doug McCuistion from NASA headquarters in Washington, D.C.

    Other recent NASA spacecraft at Mars include the Mars Global Surveyor that began orbiting the Red Planet in 1997. The Spirit and Opportunity rovers landed on Mars January 2004. They have been exploring for 6 years, far surpassing their original 90-day mission. Phoenix landed May 25, 2008, farther north than any previous spacecraft to the planet's surface. The mission's biggest surprise was the discovery of perchlorate, an oxidizing chemical on Earth that is food for some microbes, but potentially toxic for others. The solar-powered lander completed its 3-month mission and kept working until sunlight waned 2 months later. MRO arrived at Mars in 2006 on a search for evidence that water persisted on the planet's surface for a long period of time.
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    من رسیدم، خبری نبود

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