#galaxies

#galaxies

Galaxy shadows reveal information about dark matter, dark energy, and galaxy formation. [ more ]

A new theory suggests that colder dark matter moved at slow velocities while standard matter streamed past it at supersonic speeds, leading to the formation of small, bright galaxies earlier than previously thought.

The presence of small, bright galaxies in the early universe would confirm the cold dark matter model, as only the velocity between two types of matter can produce this type of galaxy. [ more ]

Baby quasars discovered in distant universe are precursors to supermassive black holes.

Astronomers used James Webb Space Telescope to identify small galaxies with actively-feeding supermassive black holes. [ more ]

Deep-field image from the James Webb Space Telescope showcasing galaxies.

Universe teeming with galaxies in a cosmos almost incomprehensibly large. [ more ]

Astronomers have discovered the oldest black hole ever observed, challenging their understanding of their formation and growth.

The black hole is believed to be over 13 billion years old, much older than scientists previously thought possible.

The black hole's rapid growth could be due to its exceptionally high rate of devouring dead stars and other material from its host galaxy. [ more ]

Astronomers have discovered the oldest black hole ever observed, challenging their understanding of their formation and growth.

The black hole is believed to be over 13 billion years old, much older than scientists previously thought possible.

The black hole's rapid growth could be due to its exceptionally high rate of devouring dead stars and other material from its host galaxy. [ more ]

Supermassive black holes are concentrated masses in the centers of galaxies, with the 3D map revealing 1.3 million of them.

The map, created with data from the Gaia spacecraft, shows quasars - active supermassive black holes feeding on material, emitting bright radiation. [ more ]

Quasars are super bright objects produced by actively feeding supermassive black holes at the center of galaxies.

J0529−4351 is the brightest quasar ever observed, initially mistaken for a star due to its appearance. [ more ]

Early supermassive black holes in ancient galaxies are smaller than those in our nearby universe but appear too big compared to the mass of stars in their host galaxies.

These early black holes were likely spawned by collapsing gas clouds and were more massive than their galaxies, but galaxies gained stellar mass over time. [ more ]

Early supermassive black holes in ancient galaxies are smaller than those in our nearby universe but appear too big compared to the mass of stars in their host galaxies.

These early black holes were likely spawned by collapsing gas clouds and were more massive than their galaxies, but galaxies gained stellar mass over time. [ more ]

NASA's Hubble Space Telescope has captured an image of two massive galaxies colliding with each other.

This collision, known as 'Arp 122,' could eventually form a singular structure of dust, gas, and dark matter in hundreds of millions of years. [ more ]

The Hubble Space Telescope has observed the possible birthplace of the most distant fast radio burst ever observed.

The fast radio burst originated from a group of at least seven galaxies that existed when the universe was five billion years old. [ more ]

Astronomers have traced the origin of a powerful fast radio burst (FRB) and discovered seven galaxies clustered together, unlike any other known FRB origin site.

Fast radio bursts (FRBs) are millisecond-long flashes of intense energy that are still a mystery in astronomy. Knowing their origin helps explain why they exist. [ more ]

NGC 1356, LEDA 467699, LEDA 95415, and IC 1947 are the galaxies featured in the image.

The galaxies in the image may appear close together, but they are actually millions of light-years apart. [ more ]