Add Yahoo as a preferred source to see more of our stories on Google. Two planets crashed into one another in a violent, chaotic collision that astronomers recently witnessed 11,000 light-years away ...

A distant star whose light suddenly flickered like a guttering candle has led astronomers to a spectacular find. According to an analysis of the strange changes in a Sun-like star named Gaia-GIC-1, ...

A researcher discovered the rare cosmic event by noticing strange dips in a star's brightness in old telescope data. The collision created a hot cloud of rocks and dust, which researchers detected ...