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.

B-mode discovery telescope

Direct Evidence of Big Bang Inflation

Researchers with an experiment based at the South Pole have discovered the long-sought "smoking gun" for inflation. The signal was hidden in polarization patterns in the cosmic microwave background and confirms physicists' audacious theory of how the Big Bang happened.

http://www.spacetelescope.org/news/heic1404/

Hubble Displays Galactic Jellyfish

These stunning new images of spiral galaxy ESO 137-001 highlight its violent encounter with the intracluster plasma of Abell 3627, which is stripping away its gas and forming stars in the streamers.

NGC 6872, the largest spiral galaxy

Galaxies Grow By Snacking

Evidence from observations and computer simulations supports a picture of galaxy growth that isn't dominated by the rough-and-tumble crashes of big galaxies. Instead, most of the universe's stellar metropolises appear to feed themselves with nibbles instead of feasts.

binary black hole

A Double Black Hole?

Strange emission from a distant galaxy paints an enigmatic picture of what’s happening inside its core. One solution: instead of one supermassive black hole, the galaxy hosts two trapped in a tight dance around each other.

Primordial galaxy

Triple Collision in Infant Galaxy

A complex of three bright, star-forming clumps called Himiko is merging in the early universe. With its light reaching us from when the universe was only 800 million years old, this primordial galaxy could yield insight into the elusive process of early galaxy formation.

distant galaxy

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.

LMC_fullreso_70px

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.

Andromeda-Triangulum clouds

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.

galaxy star-studded tail

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.

supernova shock wave

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.