A mysterious object has shot out 1,652 blasts of energy over a short period. Though researchers are still stumped as to what caused the repeated eruptions, they hope their observations will help them get closer to an answer. The entity is a fast radio burst (FRB), an enigmatic phenomenon first observed in 2007. FRBs produce pulses in the radio part of the electromagnetic spectrum; these pulses last only a few thousandths of a second, but produce as much energy as the Sun does in a year.