NASA's Hubble Space Telescope spotted a cosmic Bullseye galaxy, revealing evidence of a rare kind of galactic collision.
WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these "toasted marshmallow" planets could be more complicated than thought.
NASA's Juno spacecraft has spotted the most powerful volcanic eruption ever seen on the solar system's most volcanic body, the Jovian moon Io.
Satellites have detected electromagnetic signals generated by ocean tides, suggesting that space-born sensors could obtain insights into the motion of other liquid masses on Earth.
Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of hot and cold. But what would the impact have been on habitability?
Black holes that have been obscured by clouds of dust still emit infrared light, enabling astronomers to spot them for the very first time
By studying the fastest jet ever seen erupting from an infant star, astronomers have discovered that the mechanism that launches these jets also launch supermassive black hole jets.