Add Yahoo as a preferred source to see more of our stories on Google. Last week, the Trump administration released a presidential budget request that would cancel almost all NASA science missions in ...

Mars has become the ultimate blank canvas for human ambition, a place where science fiction promises forests under a salmon sky and oceans filling ancient basins. Yet the closer scientists look at the ...

The concept of terraforming Mars — transforming the planet's climate to support life as we know it — has long belonged to the realm of science fiction. But a new study argues that it's time to take ...