
Two giant planets may cruise unseen beyond Pluto
11 June 2014
Planet X could have company – rocky bodies orbiting in weird clusters suggest that two monster planets hide in the outer reaches of the solar system

11 June 2014
Planet X could have company – rocky bodies orbiting in weird clusters suggest that two monster planets hide in the outer reaches of the solar system

9 June 2014
A submarine on Titan, a greenhouse on the Red Planet, and a space cowboy hitching a ride to Pluto on a comet top NASA's wild wish list

6 June 2014
Nitrogen from Pluto's atmosphere could be flowing over to its moon Charon – something we've never seen in a planet and moon before

5 June 2014
A possibly rocky world snared from another galaxy is thought to be 11.5 billion years old and may still be warm enough to be friendly to life

17 April 2014
Found by NASA's Kepler telescope, the world is slightly bigger than Earth and orbits an active red star that could drive dazzling sky shows

2 April 2014
Designed to study distant galaxies, the world's largest digital camera is also uncovering faint, distant worlds on the outskirts of the solar system

26 March 2014
The Automated Planet Finder telescope has been working tirelessly day and night, seeking out alien worlds – and its haul of planets is just beginning

26 March 2014
The orbit of a newly discovered dwarf planet could signal the existence of a rocky world, 10 times bigger than Earth, lurking in the solar system's fringes

22 January 2014
The first direct detection of water vapour from Ceres hints that the tiny world has a layer of buried ice or perhaps even slushy volcanoes

7 January 2014
Planets more than twice Earth's size are likely to be more gassy or wetter than Earth, limiting the places where machine-savvy alien life could develop