Astrophysicists are used to work with unimaginable time scales due to the universe's apparently infinite size. NASA scientists want to be ready for next-generation space telescope. For the Near-Earth Object Camera (NEOCam) wants to watch out for any asteroids on a catastrophic collision course for Earth.
One thing is for certain – it is a question of when, not if asteroid wants hit Earth. [19659002"AmyMainzeraCaltechJetPropulsionLaboratoryscientistandNEOCamprojectteamleader"
NASA has NASA to find 90 percent of asteroids larger than 140 meters (460 ft) in diameter by 2020.
But the US space asteroids has been detected, experts expect twice as many are still undiscovered.
Asteroids is a danger to life on Earth, sending a spacecraft to intercept it would require a 1
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There is no plan to meet the Congressional Mandates, with NASA Waiting for a report outlining the best methods of finding near-earth objects, this is a decision on NEOCam.
Professor Richard Binzel, a planetary scientist at the Massachusetts Institute of Technology, said: "I do not loose sleep over the risk of undiscovered asteroid impacting the earth because of the chances are small, but they are not zero.
"We have the capability, the adult responsibility, to just know what's out there. And NEOCam is basically ready to go. "
Another space sample called IMAP will launch in 2024 to study solar wind, heading for orbit that is also ideal for NEOCam.
There is room on its rocket for one more payload NEOCam
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But NASA scientists want to require prioritization and funding for the telescope in time.
Another important source of near-earth asteroid data is the Large Synoptic Survey Telescope (LSST).
By 2023, the telescope will begin a 10-year survey, capturing wide-scale images of the night sky.
And NASA researchers believe the LSST could collect about 75 percent of near-Earth objects as small as 140 meters across.
However, to reach the 90 per cent target requires space-based infrared observations, which NEOCam is designed to collect.
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At visual wavelengths, astronomers have a hard time distinguishing between large, dark objects and small, bright ones, but infrared data can be used to solve that problem.  Professor Binzel said, "I do not think anyone appreciates how hectic the LSST survey will be when we begin to see everything that is out there."
"A 10 meter object passes inside the Moon's orbit every
"The early orbit solutions will not be able to distinguish 'hit or miss''
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