A new study from scientists at LMU in Germany says that there could be enough heat and liquid water on moons of rogue planets - free-floating worlds with no suns - to support life. Cosmic rays could drive processes such as photosynthesis, instead of direct sunlight.
Read MoreHundreds of thousands of people from 112 countries helped select names for distant exoplanets and their stars. So, for example, the exoplanet formerly known as HAT-P-36b - about 1,000 light-years away - now also carries the name Bran, from an Irish legend.
Read MoreThe Webb Telescope is Hubble's successor, due to launch in 2021. A new study says it'll be powerful enough to search for life signatures in the atmospheres of the 7 Earth-sized planets in the TRAPPIST-1 system, just 39 light-years away.
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