Four galaxy clusters merging in colossal collision
Infant galactic supercluster found in early universe
Galaxies leave a trail as they plunge into massive cluster
Hundreds of galaxies hidden in quasar’s 46-billion-sun glare
Hubble discovers ‘wobbling galaxies’
A lot of galaxies need guarding in this Hubble view
Like the quirky characters in the upcoming film Guardians of the Galaxy Vol. 2, NASA’s Hubble Space Telescope has some amazing superpowers, specifically when it comes to observing galaxies across time and space. One stunning example is galaxy cluster Abell 370, which contains a vast assortment of several hundred galaxies tied together by the mutual pull of gravity.
Is dark matter “fuzzy”?
Astronomers have used data from NASA’s Chandra X-ray Observatory to study the properties of dark matter, the mysterious, invisible substance that makes up a majority of matter in the universe. The study, which involves 13 galaxy clusters, explores the possibility that dark matter may be more “fuzzy” than “cold,” perhaps even adding to the complexity surrounding this cosmic conundrum.
Discovering the X-ray treasures in Chandra’s archives
Each year, NASA’s Chandra X-ray Observatory helps celebrate American Archive Month by releasing a collection of images using X-ray data. Each of these six new images — representing just a small fraction of the treasures that reside in Chandra’s unique archive — also includes data from telescopes covering other parts of the electromagnetic spectrum, such as visible and infrared light.
A young mammoth cluster of galaxies sighted in the early universe
Astronomers have uncovered evidence for a vast collection of young galaxies 12 billion light years away. The newly discovered “proto-cluster” of galaxies, observed when the universe was only 1.7 billion years old (12 percent of its present age), is one of the most massive structures known at that distance.