NASA Plans to Send Humans to an Asteroid by 2021


Alasdair Wilkins
io9.com
April 8, 2013

Although NASA hasn’t made any official announcements, Senator Bill Nelson and an anonymous White House official have both made public America’s plans for its next phase of human space exploration. The ambitious proposal calls for a probe to capture a small asteroid in 2019 and bring it near the Moon. Astronauts would then explore the asteroid in 2021. This would be the first time humanity has left low Earth orbit since Apollo 17 in 1972, and it could set the stage for a NASA mission to Mars.

Senator Nelson (D-FL), who is the chairman of the Senate Science and Space Subcommittee and who flew into space on Columbia in 1986, discussed the plan in a Friday press conference, and an unnamed White House official confirmed the plan in an email to NBC News. The plan calls for a robotic probe to capture a small, near-Earth asteroid, placing the rock in what NASA’s Donald Yeomans compares to “a baggie with a drawstring.” NASA would target an asteroid in the 500-ton and 25-feet range, which is too small to pose any threat to Earth; even if it somehow got on a collision course with our planet, it would just burn up harmlessly in the atmosphere.

Then again, the plan isn’t to bring the asteroid to Earth — the probe would travel up to 10 million miles away to find the asteroid, and it would then bring the asteroid to near the Moon, which is only 200,000 miles away. That cuts the travel time for astronauts from months to just a few days, which is a huge advantage for this plan compared to past proposals and helps make it possible to complete this mission by 2021. NASA would likely send four astronauts to the asteroid in an Orion space capsule. Once there, astronauts would collect samples and spacewalk around the asteroid. Here’s how the White House official describes the plan in the email:

“This mission would combine the best of NASA’s asteroid identification, technology development, and human exploration efforts to capture and redirect a small asteroid to just beyond the moon to set up a human mission using existing resources and equipment, including the heavy-lift rocket and deep-space capsule that have been under development for several years.”

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