NASA scientist Tom Barclay says new discoveries by the Kepler satellite mean habitable planets are no longer just "theoretical":
T. Barclay: These discoveries suggest that there are many habitable, small planets.
T. Barclay: Discussing habitable planets is no longer a theoretical exercise.
More top news
Skies clear across many areas overnight but heavy rain moves in across Ireland.
The bomb exploded after a group of children picked it up thinking it was a toy, a relative of one of the victims said.