Earth is not the only ocean world in the solar system. In fact, there are several. A new paper just published in Astrobiology seeks to plan out the best ways to explore these alien oceans.
The initial 45-day signaling period to the 14-year-old rover has ended. But NASA said this week it will continue trying to hail Opportunity. The rover has been silent since June, when a Mars dust storm swept over it.
Astronomers caught a glimpse of Phaethon - the bizarre blue asteroid responsible for the Geminid meteor shower - and found it even more enigmatic than they’d thought.
We currently have nearly 4,000 confirmed exoplanets, or planets orbiting distant suns. Kepler discovered more than 2,600 of them. But now Kepler is passing the torch.
Europa has been thought to have water vapor plumes similar to those on Saturn's moon Enceladus. But new research shows Europa's plumes differ significantly from those on Enceladus - or, perhaps - don't really exist at all.