A crew on the Moon is roughly three days from Earth and can abort home. A crew bound for Mars is seven to nine months out, ...

Earth takes 365 days to orbit the Sun and Mars takes about 687, so the two planets line up for an efficient transfer only ...

Mars is not an American frontier. It is a universal heritage site. The first human footprint on Martian soil must represent a species, not a flag. If we launch a crew without a global mandate, we risk ...

Mars has been a source of myth, lore and inspiration since antiquity. It is also an interesting place to research—a legitimate candidate for us to find some form of alien life. Since the 1960s, Mars ...

Mars is by far the most Earth-like planet in the solar system… but that's not saying much. We know that Mars once hosted oceans, rivers, lakes, streams. It had a thick, carbon-dioxide-rich atmosphere.

Add Yahoo as a preferred source to see more of our stories on Google. Siccar Point, photographed by the Curiosity rover, is near Mars' Gale Crater. NASA/JPL-Caltech/MSSS; Processing & License: Kevin M ...

Earth-based experiments on iron-sulfur alloys thought to comprise the core of Mars reveal details about the planet’s seismic properties for the first time. This information will be compared to ...

When I was in middle school, my biology teacher showed our class the sci-fi movie “Star Trek III: The Search for Spock.” The plot drew me in, with its depiction of the “Genesis Project” – a new ...