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Galaxy

A galaxy is any of the systems of stars and interstellar matter that make up the universe. A galaxy is composed of stars, stellar remnants, interstellar gas, dust, and dark matter that are all held together by gravity.
Nature has provided an immensely varied array of galaxies, ranging from faint, diffuse dwarf objects to brilliant spiral-shaped giants.

New insights into one of the cosmos’ most extreme environments

Space
A star’s unexpected survival.

A series of simulations offer a new perspective on the Universe’s structure

Space
The distribution of galaxies in the universe is quite different.

Chandra detected a galaxy lonelier than expected

Space
The result may push the limits for how quickly astronomers expect galaxies to grow in the early universe.

First images released from JWST’s largest general observer program

Space
Mosaic images from the COSMOS-Web program offer a treasure trove of early galaxies.

AI creates the Galaxy’s most precise map of star birthplaces

AI & Machine Learning
140,000 molecular gas clouds—where stars form—locations predicted!

Scientists detected an infant star near the black hole at the center of our Galaxy

Space
It exists, after all.

A rapidly growing black hole discovered in one of the most extreme galaxies

Space
The discovery provides new clues on the formation of the very first supermassive black holes.

Astronomers spotted a rogue supermassive black hole tearing through space

Space
Along the way, the giant is creating shock waves and triggering star formation.

Discovery of six massive early galaxies defies prior understanding of the universe

Space
These objects are way more massive​ than anyone expected.

Largest two-dimensional map of the sky ever created

Space
Over One Billion Galaxies Blaze Bright in Colossal Map of the Sky

NASA’s Chandra discovers giant black holes on a collision course

Space
This is the first evidence for such an impending encounter.

Astronomers uncovered footprints of galactic immigration in Andromeda galaxy

Space
Striking new evidence of a large galactic immigration event in the Andromeda Galaxy.
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