For the last few years, the agency's envisioned «Journey to Mars» campaign has included the Asteroid Redirect Mission (ARM), an effort to pluck a boulder from a near - Earth asteroid and drag the rock to lunar orbit, where it could be
visited by astronauts aboard Orion.
Several scientifically interesting asteroids could be
visited by astronauts with flight times ranging from six months to a year and a half using a 200 - kilowatt (kW) electric propulsion system, which is a reasonable advance over our present capability; the ISS currently has 260 kW of solar arrays installed.
After its 1990 launch, the Hubble Space Telescope had a rough early going, which required
a visit by astronauts to fit it with corrective mirrors to make it see clearly.
Not exact matches
As part of the series — produced
by Darren Aronofsky and narrated
by superstar Will Smith — several
astronauts give personal anecdotes and perspectives about the planet based on a place few humans who have actually
visited outer space.
In a statement, President Obama said of the
astronaut and public servant, «John always had the right stuff, inspiring generations of scientists, engineers and
astronauts who will take us to Mars and beyond — not just to
visit, but to stay... The last of America's first
astronauts has left us, but propelled
by their example we know that our future here on Earth compels us to keep reaching for the heavens.
Tennis legend Billie Jean King and former NASA
astronaut Ellen Ochoa will
visit UC San Diego on May 23rd to help dedicate the Sally Ride Forever stamp, which is being introduced
by the U.S. Postal Service.
Tiangong - 1 is China's first space station; it launched in 2011 and was
visited twice
by taikonauts (Chinese
astronauts).
The
visit was marked
by some fanfare because it was the first time a naturalized citizen had ever been considered for the job of
astronaut.
Astronauts who
visit the International Space Station, the high - price and low - profile structure currently orbiting Earth, will be ferried there for the next five years
by the Russian reusable space capsule Soyuz.
The Asteroid Initiative is NASA's proposal for implementing President Obama's mandate of sending
astronauts to an asteroid
by 2025, prior to
visiting the vicinity of Mars in the 2030s.
The Hubble space telescope had an unanticipated problem that fortunately was able to be nicely repaired
by visiting astronauts.
Though the May 2009
visit to Hubble
by astronauts aboard the space shuttle Atlantis was the last scheduled servicing mission for the orbiting observatory (which is expected to remain in orbit until at least 2014), the National Aeronautics and Space Administration has already collected galaxies of data from it.
The space station, with a volume of about 15 cubic meters, or 1 / 60th of the International Space Station, was launched at the end of September 2011 and was
visited twice
by astronauts in the following years.