A flyby of Mars in 2021 could be a good precursor to landing astronauts on Mars sometime in the not-too-distant future, but much work needs to be accomplished before that goal can be achieved, experts told Congress Thursday (Feb. 27).
A flyby of Mars in 2021 could be a good precursor to landing astronauts on Mars sometime in the not-too-distant future, but much work needs to be accomplished before that goal can be achieved, experts told Congress Thursday (Feb. 27).