This artistic impression shows the collision of two planetesimals in the young, evolving planetary system of Fomalhaut. NASA’s Hubble Space Telescope has captured the dramatic aftermath of two violent ...

In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds silently loop around their stars. Some drift as far as 10,000 times the distance ...

The mystery at Jupiter's heart has taken a fresh twist – as new research suggests a giant impact may not have been responsible for the formation of its core. It had been thought that a colossal ...