in the past year, American asteroid capture task attracted global Cheap Ravens Jerseys attention. NASA announced the 19 task progress, investment and future plans. Cheap Rams Jerseys
just capture "ultra small" planet
asteroid capture mission formally known as the "asteroid redirection task", began in 2013, the main content is an unmanned spacecraft to capture the asteroid, and then the "redirect" to a stable orbit around the moon. After the use of large thrust "space launch system" rocket "Orion" spacecraft launch, Cheap Texans Jerseys carrying astronauts landing sampling.
19 NASA said Wednesday, unmanned spacecraft is scheduled to launch in 2019.
currently, Cheap Cardinals Jerseys America relevant agencies are assessing the two asteroid capture scheme, the first is to capture a complete asteroids; second is to capture a boulder from a large asteroid surface. Two schemes of target diameter is not more than 10 meters. NASA says, it will choose the later this Cheap Buccaneers Jerseys year in the two scheme is made, and further to the plan optimization.
in the capital, NASA will pay 4900000 dollars for research on the concept of execution of each part of the task. This conceptual study was in March this year, public bidding, will begin in July completed in 6 months.
"asteroid redirection task" project manager Michael · Gates introduced, mechanical equipment, is expected to cost $1200000000; the astronauts and manufacturing rocket, has not been estimated the size of funds.
three asteroids for capturing
and the "capture" asteroid, NASA says 19 days, according to the "observed Spitzer" Infrared Space Telescope, a 6 meter diameter asteroid become effective candidate's new "". This asteroid is named 2011MD, together with the previously determined 2009BD and 2013EC20, American has identified 3 asteroids for capturing and exploration.
NASA said, there are 6 other asteroids were identified as potential candidates, one of which is called 2008HU4, will fly near earth in 2016, then may be able to confirm whether it is "effective candidate", the other 5 were selected from the earth before 2018 are not enough in. In addition, USA Neos projects every year also found several potential candidates. According to Xinhua news agency,
Reveal a secret"2011MD" asteroid
"height" 6 meters "weight" 100 tons of
"2011MD" asteroid about 6 meters in diameter, the interior is full of bubbles, only 1/3 are rock, hollow part accounted for 2/3, the total weight of about 100 tons, which belongs to the typical "look slim, but puffiness".
astronomers also not sure, whether it is a "lone ranger", a pile of rubble like asteroid group, or a small stones and dust around the asteroid.
plus two small >
没有评论:
发表评论