Twin orbs of superhot plasma at the Milky Way's center known as the "Fermi bubbles" contain inexplicable clouds of cold ...

The Fermi bubbles were discovered in 2010 by NASA’s Fermi Gamma-ray Space Telescope. The two orbs form an hourglass structure ...

The solar system's journey through the galaxy is more complex than most imagine. While we often picture planets orbiting the ...

The bright Milky Way mixed with airglow and clouds is pictured above a puddle of acid water at Achada do Gamo, at the Dark Sky Alqueva Reserve in Mértola, Portugal.

Huge gamma-ray bubbles emanate from the Milky Way’s center. Shown as purple in this illustration, these structures have well-defined edges, which indicate that an extremely energetic event ...

The object seems to be travelling on a steep path - suggesting it came from the Milky Way's "thick disk", an area of ancient ...

High above and far in the distance, the band of our Milky Way galaxy forms an arch over a large stalk in this night panorama image." The glowing tents in Giulio Cobianchi's "Base Camp" make for a ...

The Milky Way galaxy, shaped something like an egg-over-easy — a thick, yolky middle surrounded by a thinner disk of egg white — measures 100,000 light years in diameter and about 10,000 light ...

The Milky Way is a significant player in the Local Group, a gravitationally bound cluster of roughly 80 galaxies that act as a unit. Most of its members are small "dwarf" galaxies.

Known as Cepheid variables, the stars are positioned above and below the plane of the galaxy's disk. That position, combined with the stars' young age, indicates a warp to the arm that was ...

The Milky Way is a truly monstrous collection of more than 100 billion stars that stretches more than 100,000 light-years wide. However, we have company in the form of small neighbors called dwarf ...