And recent discoveries even suggest that we may occasionally be
visited by asteroid - like objects coming in from interstellar space.
Not exact matches
He suggested
visiting a near - Earth
asteroid instead, but a report released on 5 December
by the National Academies says that this plan, too, has misfired.
The
asteroid will be one of the smallest objects ever
visited by a planetary spacecraft.
Two NEAs have been
visited by spacecraft: 433 Eros,
by NASA's Near Earth
Asteroid Rendezvous probe, and 25143 Itokawa,
by the JAXA Hayabusa mission.
The research is part of the Measurements of 11
Asteroids and Comets Using Herschel (MACH - 11) program, which used Herschel to look at small bodies that have been or will be
visited by spacecraft, including the targets of NASA's previous Deep Impact mission and upcoming Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS - Rex).
The mile - wide
asteroid Braille,
visited by the Deep Space 1 spacecraft in 1999, appears to be a big chip that broke off Vesta.
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.
«A current stated interim goal of NASA's human spaceflight program is to
visit an
asteroid by 2025,» said Albert Carnesale, a professor at the University of California, Los Angeles, who chaired the committee that authored the report.
Such an intriguing metallic planetary body has not been studied before
by any spacecraft; other
asteroids visited have been of the rocky variety.
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 aboar
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 aboar
asteroid and drag the rock to lunar orbit, where it could be
visited by astronauts aboard Orion.
NASA currently envisions the first two SLS flights, EM - 1 and 2, as part of the agency's
Asteroid Initiative mission proposal, which aims to robotically redirect a small Near - Earth
Asteroid into orbit around the Moon
by the end of the decade, to be later
visited by human crews.
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 th
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 th
asteroid by 2025, prior to
visiting the vicinity of Mars in the 2030s.
Then on October 1991
asteroid 951 Gaspra was
visited by the Galileo spacecraft and became the first
asteroid to have hi - resolution images taken of it.
This was the second
asteroid to be
visited by spacecraft.
Find out more about Lovers in a Dangerous Spacetime
by visiting the official
Asteroid Base blog as it revs up for its expected 2013 release.