Complex organic molecules like those on which life is based exist throughout the universe and can be made naturally by stars, European Space Agency data has revealed.
What do more than a thousand planet candidates and their suns look like? Jason Rowe, of NASA's Kepler science team has produced an image that shows each of the 1,235 potential planets so far discovered transiting its star.
New observations have indicated that there are three times as many stars in the universe as previously believed.
Many of the Milky Way's ancient stars derive from other smaller galaxies torn apart by violent galactic collisions, say researchers at Durham University.