Astronomers used radio waves to study conditions in the vicinity of Proxima Centauri, the nearest star to our sun. The results suggest Proxima's 2 known planets are likely bathed in intense radiation from this star, casting doubt on the planets' potential for life.
Read MoreBecause stars are so much brighter than their planets, we've barely begun to glimpse distant exoplanets, or planets orbiting distant stars. Now a new technology promises to provide better imaging of these potentially habitable exoworlds.
Read MoreIt was exciting last week when scientists announced water vapor in a super-Earth's atmosphere. But, even as the announcement came, other scientists were cautioning that the planet - K2-18b - is probably less like a super-Earth and more like a mini-Neptune.
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