Galaxies

With more than 100 billion galaxies in the observable universe, the exciting discoveries and unanswered questions are endless. We bring you the latest news in galaxies and galaxy formation. Each galaxy is unique, ranging from peculiar galaxies, morphed from tidal interactions, to the vast and breathtakingly beautiful spiral galaxies imaged in so many galaxy pictures.

Astronomers have used the Hubble Space Telescope to peer deep into the history of the universe, mapping galaxy formation by first examining distant quasars —supermassive black holes at the centers of galaxies which are rapidly accreting material and shining brightly — in the early universe. We’re continuing to learn how galaxies form, evolve, and shape the beloved universe we call home.

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A Galaxy Near Cosmic Dawn

Astronomers have confirmed that light from a distant galaxy is reaching us from about 700 million years after the Big Bang. The galaxy's emission hints that star formation during that era might have proceeded at a much faster rate than previously thought.

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New View of Nearest Galaxies

Spectacular high-resolution images released at the 222nd American Astronomical Society conference in Indianapolis reveal two of the Milky Way’s nearest galactic neighbors in a new light.

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The Mysterious Seven

Seven clouds of hydrogen dotting the space between two iconic galaxies might be crumbs from a past encounter or evidence for the elusive cosmic web theorized to fuel galaxy growth.

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The Most Distant Star Ever Seen?

Astronomers have detected what might be the farthest star ever spectroscopically observed. The bright object blazes in an unusual location, too, perhaps giving insight into star formation in unconventional environments.

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Culprit Pegged for Cosmic Rays

Astronomers working with the Fermi Gamma-ray Space Telescope say they might finally have the “smoking gun” they’ve needed to convict supernova remnants as the origin of energetic particles called cosmic rays.

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Galaxy Family Portrait

The Hubble Space Telescope snapped a family portrait of a pair of galaxies in the nearby Virgo galaxy, where a huge elliptical galaxy dwarfs its spiral sibling.

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Star-Shredder’s Brief Pulse

A supermassive black hole spotted last year as it ripped a star apart and spat out a jet had another surprise up its sleeve: a short-lived X-ray heartbeat seen only once before from a galaxy’s central beast.

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Black Holes Might Form Like Planets

Astronomers have plenty of evidence for small and large black holes, but have had little luck tracking down the mid-sized variety. One team of researchers suggests the search has been focused on the wrong places all along.