Water-powered spaceship could make Mars trip on the cheap
March 25, 2011, 2:29 p.m. by Space.com Inc.
Concept vehicle would allow easier, comfier and cheaper space travel to Mars — around $1 billion or so.
Are Earthlings from Mars? New tool may reveal your alien ancestry
March 24, 2011, 10:49 a.m. by Space.com Inc.
New technology may help scientists determine if Mars microbes traveled through space and began life on Earth.