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Galaxies and their stars in the early Universe look a lot weirder than those we see today, and astronomers want to know why. A team of researchers at the University of Utah decided...
Galaxies are enormous and hold hundreds of billions of stars. These stars form from cold, dense gas. Every large galaxy, including the Milky Way, is wrapped in a huge envelope of g...
The more astronomers learn about the universe's earliest galaxies, the stranger they seem. Many of their surprising properties may be explained by differences between their massive...
Faint stars hidden inside massive early galaxies suggest some may contain several times more stellar mass than previously estimated. Some of the universe’s earliest massive galaxie...
The newfound star S301 orbits the Milky Way’s supermassive black hole so closely that its view of the heavens gets twisted
Galaxies can be peaceful star factories or cosmic wrecking grounds, torn apart by collisions and blasted by colossal black hole jets. A new collection of 16 images from NASA’s Chan...
Spirals, ellipticals, irregulars, oh my!
New Hubble Space Telescope TEMPOS survey of 29 massive stars in extremely metal-poor galaxies finds unexpectedly weak stellar winds and delivers the largest-ever dataset of its kin...
The core of the Milky Way is a dense, active, messy region, dominated by a supermassive black hole called Sagittarius A* (Sgr A*) hiding at the heart of the galaxy. But Sgr A* is o...
In dark skies at night, distant starlight twinkles and speaks to vast cosmic histories almost as old as time itself. New data from instruments such as NASA's James Webb Space Teles...
Astronomers using Georgia State University's Center for High Angular Resolution Astronomy (CHARA) Array have found that nearby stars darken toward their edges more strongly at near...
The newest DESI Legacy Imaging Surveys map covers three-quarters of the sky and catalogs nearly four billion objects. This publicly-available database contains stars, galaxies, sup...
How do scientists know the mass of the Universe? Measuring it has traditionally relied on knowing how many stars there are in galaxies, as well as clouds of gas and dust, and assoc...
Located roughly 17 million light-years from Earth in the constellation Coma Berenices, M64 is known for an unusual internal motion: gas in its outer regions rotates in the opposite...
A new study finds that two early-universe objects thought to be faint quasars are actually extraordinarily luminous galaxies powered by bursts of star formation. James Webb Space T...
Astronomers have discovered a star being torn apart by a massive black hole more than 1,000 parsecs from the center of its host galaxy. The tidal disruption event, TDE 2023mfm, was...
Dwarf galaxies—with a mass equal to about a billion suns, but often considerably less—are the most abundant in the universe. However, because of their low luminosity, they are very...
Learn how two galaxies slowly pulling toward each other inspired a name that captures their cosmic collision and the birth of new stars within them.
Astronomers using the W.M. Keck Observatory and Gemini North Telescope on Mauna Kea have published a study about Wolf-Rayet stars orbiting the central supermassive black hole at th...
Using a state-of-the-art galaxy simulation, a team led by scientists from the Leibniz Institute for Astrophysics Potsdam (AIP) gained new insights into the processes shaping galact...
Supermassive black holes power tremendous jets that extend far beyond their galaxy. A new study finds how they can also warm material at the outer edge of a galaxy and reduce the r...
Astronomers have cataloged billions of stars and hundreds of billions of galaxies. We have found thousands of planets orbiting stars. We can also map where galaxies sit and trace h...
Astronomers have discovered a stellar cluster hidden in the crowded disk of the Milky Way. The object, named Garro 04, was first identified as an unusual collection of stars in obs...
The NASA/ESA/CSA James Webb Space Telescope Picture of the Month features the brilliant golden galaxies belonging to the MACS J0454.1-0300 galaxy cluster.
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