Galaxy clusters

Chandra X-Ray Observatory
Astrophysics
Galaxies
Galaxy clusters
Marshall Astrophysics
Marshall Space Flight Center
The Universe
A new discovery captures the cosmic moment when a galaxy cluster – among the largest structures in the universe – started to assemble only about a billion years after the big bang, one or two billion years earlier than previously thought. This result, made using NASA’s Chandra X-ray Observatory and James Webb Space Telescope, will […]
Posted January 28, 2026
Chandra X-Ray Observatory
Astrophysics
Galaxies
Galaxy clusters
Marshall Astrophysics
Marshall Space Flight Center
The Universe
Celebrate the New Year with the “Champagne Cluster,” a galaxy cluster seen in this new image from NASA’s Chandra X-ray Observatory and optical telescopes. Astronomers discovered this galaxy cluster Dec. 31, 2020.
Posted December 30, 2025
IXPE (Imaging X-ray Polarimetry Explorer)
Astrophysics
Chandra X-Ray Observatory
Galaxies
Galaxy clusters
Marshall Astrophysics
Marshall Science Projects
Marshall Science Research & Projects
Marshall Space Flight Center
Neil Gehrels Swift Observatory
The Universe
X-ray Astronomy
Written by Michael Allen An international team of astronomers using NASA’s IXPE (Imaging X-ray Polarimetry Explorer) has identified the origin of X-rays in a supermassive black hole’s jet, answering a question that has been unresolved since the earliest days of X-ray astronomy.
Posted December 16, 2025
Chandra X-Ray Observatory
Galaxy clusters
James Webb Space Telescope (JWST)
This image released on June 30, 2025, combines data from NASA’s James Webb Space Telescope and NASA’s Chandra X-ray Observatory to visualize dark matter. Researchers used Webb’s observations to carefully measure the mass of the galaxy clusters shown here as well as the collective light emitted by stars that are no longer bound to individual […]
Posted November 14, 2025
Astrophysics
Astrophysics Division
Galaxies
Galaxy clusters
Goddard Space Flight Center
Gravitational Lensing
Hubble Space Telescope
A massive, spacetime-warping cluster of galaxies is the setting of today’s NASA/ESA Hubble Space Telescope image. The galaxy cluster in question is Abell 209, located 2.8 billion light-years away in the constellation Cetus (the Whale). This Hubble image of Abell 209 shows more than a hundred galaxies, but there’s more to this cluster than even […]
Posted July 11, 2025
Chandra X-Ray Observatory
Galaxies
Galaxy clusters
Marshall Astrophysics
Marshall Space Flight Center
The Universe
New observations from NASA’s Chandra X-ray Observatory and other telescopes have captured a rare cosmic event: two galaxy clusters have collided and are now poised to head back for another swipe at each other. Galaxy clusters are some of the largest structures in the Universe.
Posted June 4, 2025
Nancy Grace Roman Space Telescope
Astrophysics
Dark Energy
Dark Matter
Galaxies
Galaxies, Stars, & Black Holes
Galaxies, Stars, & Black Holes Research
Galaxy clusters
Goddard Space Flight Center
High-Tech Computing
Science & Research
Stars
Supernovae
Technology
The Universe
Astronomers have released a set of more than a million simulated images showcasing the cosmos as NASA’s upcoming Nancy Grace Roman Space Telescope will see it. This preview will help scientists explore a myriad of Roman’s science goals. “We used a supercomputer to create a synthetic universe and simulated billions of years of evolution, tracing […]
Posted January 14, 2025
Astrophysics
Galaxies
Galaxy clusters
Goddard Space Flight Center
Gravitational Lensing
James Webb Space Telescope (JWST)
Science & Research
The Universe
For the first time, NASA’s James Webb Space Telescope has detected and “weighed” a galaxy that not only existed around 600 million years after the big bang, but is also similar to what our Milky Way galaxy’s mass might have been at the same stage of development. Other galaxies Webb has detected at this time […]
Posted December 11, 2024
Astrophysics
Galaxies
Galaxies, Stars, & Black Holes
Galaxy clusters
Goddard Space Flight Center
Gravitational Lensing
James Webb Space Telescope (JWST)
Science & Research
The Universe
It’s 7 billion years ago, and the universe’s heyday of star formation is beginning to slow. What might our Milky Way galaxy have looked like at that time? Astronomers using NASA’s James Webb Space Telescope have found clues in the form of a cosmic question mark, the result of a rare alignment across light-years of […]
Posted September 4, 2024
Astrophysics
Chandra X-Ray Observatory
Galaxies
Galaxy clusters
Marshall Space Flight Center
Nebulae
The Universe
It’s time to take a cosmic road trip using light as the highway and visit four stunning destinations across space. The vehicles for this space get-away are NASA’s Chandra X-ray Observatory and James Webb Space Telescope. The first stop on this tour is the closest, Rho Ophiuchi, at a distance of about 390 light-years from […]
Posted July 11, 2024
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