Dome at Calar Alto Observatory.
Pedro Amado/Marco Azzaro - IAA/CSIC
The discovery of a huge planet orbiting a small star challenges our understanding of planet formation.
The ALMA telescope has seen tantalising hints of a violent event.
ESO/B. Tafreshi/TWAN (twanight.org)
The 'oldest known nova' (a star explosion) in the sky was actually not a nova, astronomers show.
Imagined view from the surface of one of the newly discovered planets, with ultracool dwarf star TRAPPIST-1 in the background.
We don't need to look for Earth-like planets exclusively around Sun-like stars. Tiny, dim TRAPPIST-1 has only 11 percent the diameter of the Sun and is much redder.
Recent Martian findings are just the latest discoveries of aurora on other planets, both in and out of our solar system.
An artist’s conception of WISE J0855-0714.
NASA, JPL-Caltech and Penn State University
Author Douglas Adams famously had his Hitchhiker’s Guide to the Galaxy remark that “space is really big”. But to my mind the sheer vastness of space is better encapsulated in the recent announcement of…