
Kepler telescope launches to hunt for alien Earths
4 February 2009
The space telescope should be able to see Earth-size planets in the 'habitable zone' of their stars for the first time

4 February 2009
The space telescope should be able to see Earth-size planets in the 'habitable zone' of their stars for the first time

17 December 2008
The digested end-product of this cosmic feast could be the ancestors of the supermassive black holes that sit at the centre of galaxies like the Milky Way

13 August 2008
Planets may be more common around red dwarf stars than previously thought, raising hopes of finding Earth-like worlds around these dim bodies

16 July 2008
Ceres sits in the asteroid belt between the orbits of Mars and Jupiter – yet its composition suggests it has wandered far from its origins

28 May 2008
As more super-Earths not much bigger than our home planet are found, astronomers are coming up with ways to study them in detail

18 March 2008
Two unusual meteorites found in Antarctica in 2006 came from a dwarf planet in our solar system, which has now vanished

2 May 2007
Europe's new space telescope is proving 10 times as sensitive as expected, giving it the edge in the hunt for new planets

30 August 2006
Even as you mourn Pluto's demotion from planet, spare a thought for poor old Ceres, which has twice battled to attain planetary status

25 January 2006
Planet hunters have detected what seems to be the smallest extrasolar planet so far, orbiting a red dwarf 22,000 light years away

6 April 2005
Instead of listening for alien radio broadcasts, a better strategy for SETI might be to look for giant structures placed in orbit around nearby stars