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| Deep Space Habitat |
As well as missions straight to Mars and
other planets, NASA has plans for space
stations inside the orbit of the Moon as a
stepping stone for even more-distant goals.
The Deep Space Habitat proposal has
two versions. The basic model supports
four crew for 60 days and would enable a
semi-permanent base floating somewhere
along the L1 or L2 Lagrange point. These are
the points where the Moon and the Earth’s
gravity cancel each other out. A moreambitious,
500-day version could be used to
intercept near-Earth asteroids.
A spacecraft can effectively hover at this
point in space indefinitely and provide a
waypoint for future Lunar or Martian landing
missions. Deep Space Habitat uses modules
and technologies that have been extensively
tested aboard the ISS and could be launched
in sections. A fuel depot at the L1 Lagrange
point would enable lander spacecraft to be
launched from Earth with empty fuel tanks
and collect fuel on the way. This would
reduce their liftoff weight and could have a
massive affect on the feasibility of regular
supply flights to an off-world colony.
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