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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.

Astronomers figured out how to measure the speed of dark matter

Space
Lopsided galaxies shed light on the speed of dark matter.

The Milky Way’s core may contain less dark matter than previously estimated

Space
Stars travel more slowly at Milky Way’s edge.

Webb image techniques reveal faint features in galaxy NGC 5728

Space
Modern age JWST image development techniques.

Galaxy Mergers unveil the mystery of inexplicable hydrogen emission in early Universe

Space
Astronomers have long been puzzled by the detection of light from hydrogen atoms in the very early universe. According to theory, the abundant Lyman-α...

The oldest black hole ever observed

Space
It is ‘eating’ its host galaxy to death.

Searching for dark matter in gaps between stars

Space
Astronomers anticipate upcoming images of the Andromeda galaxy may hold vital clues.

Almost invisible dwarf galaxy challenges the dark matter model

Space
The largest and most diffuse galaxy known.

Astronomers discovered a second ultra-large structure in distant space

Space
A big cosmological mystery.

Scientists discovered X-ray activity that sheds light on the evolution of galaxies

Space
A novel galactic fossil.

Astronomers revealed mysterious star formation by hearts of molecular clouds

Space
Data from the world's largest radio telescopes holds clues.

NASA/JAXA XRISM released its first look at X-ray cosmos

Space
A new glimpse of the hidden X-ray sky.

Webb spotted a second lensed supernova in a distant galaxy

Space
Supernova Encore.
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