A Swarm of Dwarf Galaxies Buzz Around Our Milky Way's Twin Imagine the Milky Way and Andromeda as two massive aircraft ...

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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Over the past ...

Dark matter continues to confound us, so far defying every attempt to decipher it. According to a new study, clues may lurk in the Milky Way's Central Molecular Zone, a vast region of hydrogen ...

Over the past decade, scientists have detected a puzzling phenomenon: radio pulses coming from within our Milky Way galaxy that would pulse every two hours, like a cosmic heartbeat. The long radio ...

We know that Sagittarius A* (Sag A*), the black hole at the center of our Milky Way galaxy, is supermassive and rotates rapidly, dragging space-time along with it. And this small detail—its rotational ...

Astronomers have been looking for exoplanets orbiting Barnard's Star – the nearest solitary star to our Solar System, at just ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...