#galaxy-clusters tag

Dark matter in the Bullet Cluster celebrates 20 years

Dark matter's existence was confirmed through empirical evidence from colliding galaxy clusters, particularly the Bullet Cluster, 20 years ago.

OMG science

fromFuturism

3 days ago

Scientists Scan Gigantic Structure Hiding Behind Our Galaxy

An enormous supercluster of galaxies, the Vela Supercluster, was mapped, revealing it to be 300 million light-years across, far larger than previously thought.

fromBig Think

3 months ago

What the Universe looks like: from nearby to far away

Looking skyward fills us with wonder. Off-world, the Sun, planets, stars, and galaxies all await. Our Solar System encompasses our own cosmic backyard. Farther away, stars and star clusters abound within the Milky Way. Hundreds of billions of stars exist just within our home galaxy. Inside our Local Group, only Andromeda surpasses us in mass, size, and stars. More than 5 million light-years away, galaxies abound in groups and clusters.

Science

fromFuturism

3 months ago

Scientists Discover Impossible Object in Deep Space

A galaxy cluster 1.4 billion years after the Big Bang exhibits gas temperatures at least five times higher than cosmological models predict.

Science

fromwww.scientificamerican.com

3 months ago

Stunningly Hot Galaxy Cluster Puts New Spin on How These Cosmic Behemoths Evolved

Galaxy cluster SPT2349-56 contained gas at least five times hotter than predicted when the universe was 1.4 billion years old.

Science

fromThe Atlantic

4 months ago

Day 13 of the 2025 Space Telescope Advent Calendar: A Sea of Galaxies

The James Webb Space Telescope imaged hundreds of galaxies in galaxy cluster MACS J1149.5+2223 across varied distances, sizes, shapes, and colors.

Science

fromFuturism

6 months ago

Astronomers Astonished By Twin Cosmic Rings That Dwarf Entire Galaxies

A double-ringed Odd Radio Circle of magnetized plasma, hundreds of thousands of light years across, was detected 7.5 billion years away; its origin is unexplained.

Science

fromwww.scientificamerican.com

7 months ago

Want to See Dark Matter? Start with the Bullet Cluster

The Bullet Cluster reveals a separation between galaxies, hot intracluster gas, and dark matter during a massive collision, providing strong observational evidence about dark matter behavior.

OMG science

fromBig Think

10 months ago