Swift is a NASA satellite designed to spot gamma-ray bursts, the most powerful explosions in the Universe. What kinds of dynamic cosmic activity can release such high-energy wavelengths of light?

NASA’S Hubble Space Telescope has looked into deeper into the universe—and further back in time—than ever before. And it’s turned up a suite of galaxies that are new to astronomers.

Although neighboring Andromeda Galaxy may look tranquil, scientists are realizing the extent of its tumultuous history.

The Hubble Space Telescope discovers something new about star formation in dwarf galaxies.