Radio Burst from Space Reveals Fascinating Blob of Galaxies

A burst of radio waves from deep space—the largest ever detected—was found to have originated from a collection of tightly-packed galaxies which may be interacting in ways never seen before, a new study finds.

First discovered in 2007, fast radio bursts last only a millisecond. Some experts have suggested they may be from an extraterrestrial life form trying to contact other civilizations, because we humans use radio waves to communicate with each other.