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.
Gemini South telescope captures stunning image of peculiar galaxy with twisted dust lanes
Astronomers have revealed new details about a peculiar galaxy, NGC 4753, located about 60 million light-years away in the constellation Virgo. The galaxy, which...
Astronomers figured out how to measure the speed of dark matter
Lopsided galaxies shed light on the speed of dark matter.
The Milky Way’s core may contain less dark matter than previously estimated
Stars travel more slowly at Milky Way’s edge.
Webb image techniques reveal faint features in galaxy NGC 5728
Modern age JWST image development techniques.
Galaxy Mergers unveil the mystery of inexplicable hydrogen emission in early Universe
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...
Searching for dark matter in gaps between stars
Astronomers anticipate upcoming images of the Andromeda galaxy may hold vital clues.
Almost invisible dwarf galaxy challenges the dark matter model
The largest and most diffuse galaxy known.
Astronomers discovered a second ultra-large structure in distant space
A big cosmological mystery.
Scientists discovered X-ray activity that sheds light on the evolution of galaxies
A novel galactic fossil.
Astronomers revealed mysterious star formation by hearts of molecular clouds
Data from the world's largest radio telescopes holds clues.