Fast radio bursts, which are cosmic chirps that last for only a thousandth of a second, continue to defy explanation. While the characteristics of these radio bursts suggest that they come from galaxies billions of light-years away, scientists have recently uncovered a new origin. It turns out that these radio bursts may come from flaring stars within our very own galaxy.
Fast radio bursts are both brief and bright. They pack a lot of energy into a short time period. So far, only six have been discovered, all of them in archival data. In addition, each of these bursts was only detected once, which makes follow-up difficult.