Even galaxies recycle
A quasar ejected the remains of stars, but another galaxy sucked them back in. Enlarge / A quasar ejects a jet of material into intergalactic space. (credit: J. A. Biretta et al., Hubble Heritage Team) On Earth, recyclin.....»»
The universe is expanding faster than theory predicts—physicists are trying to explain the mismatch
Astronomers have known for decades that the universe is expanding. When they use telescopes to observe faraway galaxies, they see that these galaxies are moving away from Earth......»»
The "Cosmic Vine": Astronomers discover a large structure that hosts at least 20 massive galaxies
An international team of astronomers reports the discovery of a large-scale structure that consists of at least 20 massive galaxies. The structure, dubbed "Cosmic Vine," has a size of about 13 million physical light years. The finding was detailed in.....»»
Daily Telescope: Two galaxies colliding 300 million light-years from Earth
"I have wanted to image these for some time." Enlarge / Behold, it is Arp 273. (credit: James Peirce) Welcome to the Daily Telescope. There is a little too much darkness in this world and not enough light, a little t.....»»
Daily Telescope: An amazing, colorful view of the Universe
Take a look at two clusters of galaxies that are colliding. Enlarge / This panchromatic view of galaxy cluster MACS0416 was created by combining infrared observations from the NASA/ESA/CSA James Webb Space Telescope with visible-.....»»
Second-most distant galaxy discovered using James Webb Space Telescope
The second- and fourth-most distant galaxies ever observed have been discovered in a region of space known as Pandora's Cluster, or Abell 2744, using data from NASA's James Webb Space Telescope (JWST)......»»
Construction on NASA mission to map 450 million galaxies is under way
NASA's SPHEREx space telescope is beginning to look much like it will when it arrives in Earth orbit and starts mapping the entire sky. Short for Specto-Photometer for the History of the universe, Epoch of Reionization, and Ices Explorer, SPHEREx res.....»»
Astronomers discover how tiny dwarf galaxies form ‘fossils’
When tiny dwarf galaxies age and begin to erode away, they can transform into an even smaller and more dense shape, called an ultra-compact dwarf galaxy......»»
Webb and Hubble work together to image the Christmas Tree Galaxy Cluster
A beautiful new image of a cluster of thousands of galaxies combines data from both the Hubble Space Telescope and the James Webb Space Telescope......»»
Scientists show off the wide vision of Europe’s Euclid space telescope
The $1.5 billion Euclid telescope will use light to study the dark Universe. Enlarge / One of the first galaxies that Euclid observed is nicknamed the "Hidden Galaxy." This galaxy, also known as IC 342 or Caldwell 5, is difficult.....»»
Dwarf galaxies stripped of stars prove to be the missing link in the formation of rare ultra-compact dwarf galaxies
Astronomers using the Gemini North telescope, one-half of the International Gemini Observatory operated by NSF's NOIRLab, have captured the eroding remains of more than 100 dwarf galaxies as they transition into ultra-compact dwarf galaxies, objects.....»»
The Euclid Space Telescope’s Spectacular First Photos of Distant and Hidden Galaxies
Images from the European Space Agency’s newest telescope show the power of instruments that will create 3D surveys of a third of the sky, covering 10 billion years of cosmic history......»»
Glimpses of the "galactic zoo": The five new Euclid images
The first images from Europe's Euclid space telescope released Tuesday range from a well-known nebula to never-before-seen galaxies 10 billion light years away, illustrating its wide-lens view of the universe......»»
New Webb images show gas-rich baby galaxies setting the early universe alight
New images from the James Webb Space Telescope (JWST) have helped Australian astronomers unlock secrets of how infant galaxies started an explosion of star formation in the very early universe......»»
New research shows quasars can be buried in their host galaxies
A new study reveals that supermassive black holes at the centers of galaxies, known as quasars, can sometimes be obscured by dense clouds of gas and dust in their host galaxies......»»
This peculiar galaxy has two supermassive black holes at its heart
A recent image taken by the Gemini South observatory shows the chaotic result of a merger between two spiral galaxies one billion years ago......»»
Hubble captures galaxy pair Arp-Madore 2339-661
This striking image from the NASA/ESA Hubble Space Telescope captures the interacting galaxy pair known as Arp-Madore 2339-661. The Arp-Madore catalog is a collection of peculiar galaxies, and this group's particular peculiarity might be odder than f.....»»
Chaotic jumble of merging spiral galaxies hints at possible fate of Milky Way and Andromeda galaxies
The swirling arms of a spiral galaxy are among the most recognized features in the cosmos: long sweeping bands spun off from a central core, each brimming with dust, gas, and dazzling pockets of newly formed stars. Yet this opulent figure can warp in.....»»
How close is too close to a kilonova?
Cataclysmic events happen in the universe all the time. Black hole mergers, supernovae, gamma-ray bursts, and a whole host of others. Most of them happen in distant galaxies, so they pose no threat to us. But there are a few that could affect life on.....»»
Astronomers carry out largest ever cosmological computer simulation
An international team of astronomers has carried out what is believed to be the largest ever cosmological computer simulation, tracking not only dark but also ordinary matter (such as planets, stars and galaxies), giving us a glimpse into how our uni.....»»
Scientists close the cycle on recycling mixed plastics
Little of the mixed consumer plastics thrown away or placed in recycle bins actually ends up being recycled. Nearly 90% is buried in landfills or incinerated at commercial facilities that generate greenhouse gases and airborne toxins. Neither outcome.....»»