Galaxies

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
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Stars
Clusters of stars set the interstellar medium ablaze in the Andromeda Galaxy about 2.5 million light-years away. Also known as M31, Andromeda is the Milky Way’s closest major galaxy. It measures approximately 152,000 light-years across and, with almost the same mass as our home galaxy, is headed for a collision with the Milky Way in […]
Posted August 30, 2024
Nancy Grace Roman Space Telescope
Dark Matter
Galaxies
Stars
The Universe
The universe is a dynamic, ever-changing place where galaxies are dancing, merging together, and shifting appearance. Unfortunately, because these changes take millions or billions of years, telescopes can only provide snapshots, squeezed into a human lifetime. However, galaxies leave behind clues to their history and how they came to be.
Posted August 29, 2024
Astrophysics
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Stars
Andromeda III is one of at least 13 dwarf satellite galaxies in orbit around the Andromeda galaxy, or Messier 31, the Milky Way’s closest grand spiral galactic neighbor. Andromeda III is a faint, spheroidal collection of old, reddish stars that appears devoid of new star formation and younger stars. In fact, Andromeda III seems to […]
Posted August 29, 2024
Astrophysics
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Stars
NGC 261 blooms a brilliant ruby red against a myriad of stars in this new image from NASA’s Hubble Space Telescope. Discovered on Sept. 5, 1826 by Scottish astronomer James Dunlop, this nebula is located in one of the Milky Way’s closest galactic companions, the Small Magellanic Cloud (SMC). The ionized gas blazing from within […]
Posted August 28, 2024
Galaxies
Hubble Space Telescope
A glittering collection of stars shines against a background of much more distant galaxies in this view from NASA’s Hubble Space Telescope of the Pegasus Dwarf spheroidal galaxy, also known as Andromeda VI.  The Andromeda galaxy, also known as Messier 31, is the Milky Way’s closest grand spiral galaxy neighbor, and is host to at […]
Posted August 27, 2024
Chandra X-Ray Observatory
Crab Nebula
Galaxies
Marshall Space Flight Center
Nebulae
By Rick Smith On Aug. 26, 1999, NASA’s Chandra X-ray Observatory opened its powerful telescopic eye in orbit and captured its awe-inspiring “first light” images of Cassiopeia A, a supernova remnant roughly 11,000 light-years from Earth.
Posted August 26, 2024
Astrophysics
Galaxies
Galaxies, Stars, & Black Holes
Galaxies, Stars, & Black Holes Research
Goddard Space Flight Center
James Webb Space Telescope (JWST)
Science & Research
The Universe
It got called the crisis in cosmology. But now astronomers can explain some surprising recent discoveries. When astronomers got their first glimpses of galaxies in the early universe from NASA’s James Webb Space Telescope, they were expecting to find galactic pipsqueaks, but instead they found what appeared to be a bevy of Olympic bodybuilders.
Posted August 26, 2024
Astrophysics
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Stars
Roughly 210,000 light-years away, the Small Magellanic Cloud (SMC) is one of our Milky Way galaxy’s closest neighbors. In fact, this small galaxy is one of the Milky Way’s “satellite” galaxies, which orbit our home spiral galaxy. Nested within the SMC is this spectacular star cluster, known as NGC 346. Its hot stars unleash a […]
Posted August 26, 2024
Astrophysics
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Stars
A splatter of stars glows faintly at almost 3 million light-years away in this new image from NASA’s Hubble Space Telescope. Known as the Tucana Dwarf for lying in the constellation Tucana, this dwarf galaxy contains a loose bundle of aging stars at the far edge of the Local Group, an aggregation of galaxies including […]
Posted August 23, 2024
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