Artist's illustration and X-ray image of "red nugget" galaxy Mrk 1216. Credits: X-ray: NASA/CXC/MTA-Eötvös University/N. Werner et al., Illustration: NASA/CXC/M. Weiss

Red Nuggets’ Are Galactic Gold for Astronomers

Red Nuggets’ Are Galactic Gold for Astronomers About a decade ago, astronomers discovered a population of small, but massive galaxies called “red nuggets.” A new…

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When galaxies align. NASA

How we proved Einstein right on galactic scales – and what it means for dark energy and dark matter

How we proved Einstein right on galactic scales – and what it means for dark energy and dark matter When galaxies align. NASA Thomas Collett,…

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Artist conception of a tidal disruption event (TDE) that happens when a star passes fatally close to a supermassive black hole. Sophia Dagnello, NRAO/AUI/NSF., Author provided

Astronomers watch as black hole drags an exploding star to its death

Astronomers watch as black hole drags an exploding star to its death Artist conception of a tidal disruption event (TDE) that happens when a star…

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An image of the galaxy Arp299B, which is undergoing a merging process with Arp299A (the galaxy to the left), captured by NASA's Hubble space telescope. The inset features an artist's illustration of a tidal disruption event (TDE), which occurs when a star passes fatally close to a supermassive black hole. A TDE was recently observed near the center of Arp299B. Credits: Sophia Dagnello, NRAO/AUI/NSF; NASA, STScI

Astronomers See Distant Eruption as Black Hole Destroys Star

Astronomers See Distant Eruption as Black Hole Destroys Star For the first time, astronomers have directly imaged the formation and expansion of a fast-moving jet…

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An illustration of the Fermi Gamma-ray Space Telescope, which has now been studying the extreme universe for a decade. Credit: NASA’s Goddard Space Flight Center/Conceptual Image Lab

NASA’s Fermi Satellite Celebrates 10 Years of Discoveries

NASA’s Fermi Satellite Celebrates 10 Years of Discoveries On June 11, NASA’s Fermi Gamma-ray Space Telescope celebrates a decade of using gamma rays, the highest-energy form of…

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This artist’s impression shows a dusty galaxy in the distant Universe that is forming stars at a rate much higher than in our Milky Way. New ALMA observations have allowed scientists to lift the veil of dust and see what was previously inaccessible — that such starburst  galaxies have an excess of massive stars as compared to more peaceful galaxies. Credit: ESO/M. Kornmesser

ALMA and VLT Find Too Many Massive Stars in Starburst Galaxies, Near and Far

ALMA and VLT Find Too Many Massive Stars in Starburst Galaxies, Near and Far Astronomers using ALMA and the VLT have discovered that both starburst…

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How unique is our universe? Jaime Salcido/Durham University, Author provided

We discovered that life may be billions of times more common in the multiverse

We discovered that life may be billions of times more common in the multiverse How unique is our universe? Jaime Salcido/Durham University, Author provided Richard…

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This image, taken with the Wide Field Camera 3 (WFC3) and the Advanced Camera for Surveys (ACS), both installed on the NASA/ESA Hubble Space Telescope, shows the peculiar galaxy NGC 3256. The galaxy is about 100 million light-years from Earth and is the result of a past galactic merger, which created its distorted appearance. As such, NGC 3256 provides an ideal target to investigate starbursts that have been triggered by galaxy mergers. Another image of NGC 3256 was already released in 2008, as part of a collection of interacting galaxies, created for Hubble’s 18th birthday. Credit: ESA/Hubble, NASA

Cosmic collision lights up the darkness

Cosmic collision lights up the darkness Though it resembles a peaceful rose swirling in the darkness of the cosmos, NGC 3256 is actually the site…

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About a century ago, we didn’t even know that galaxies existed. Mai Lam/The Conversation NY-BD-CC, CC BY-SA

Curious Kids: will the universe expand forever, or contract in a big crunch?

Curious Kids: will the universe expand forever, or contract in a big crunch? About a century ago, we didn’t even know that galaxies existed. Mai…

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Artist impression of very young galaxy in the early universe. Credit: NRAO/AUI/NSF; S. Dagnello

ALMA Finds Most-Distant Oxygen in the Universe

ALMA Finds Most-Distant Oxygen in the Universe Galaxy 13.28 billion light-years away shows surprising signs of chemical maturity Not long after the Big Bang, the…

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The things you can do with an amaterur telescope. Shutterstock/AstroStar

An expanding universe and distant stars: tips on how to experience cosmology from your backyard

An expanding universe and distant stars: tips on how to experience cosmology from your backyard The things you can do with an amaterur telescope. Shutterstock/AstroStar…

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This image shows the galaxy NGC 6744, about 30 million light-years away. It is one of 50 galaxies observed as part of the Hubble Space Telescope’s Legacy ExtraGalactic UV Survey (LEGUS), the sharpest, most comprehensive ultraviolet-light survey of star-forming galaxies in the nearby Universe, offering an extensive resource for understanding the complexities of star formation and galaxy evolution. The image is a composite using both ultraviolet light and visible light, gathered with Hubble’s Wide Field Camera 3 and Advanced Camera for Surveys. Credit: NASA, ESA, and the LEGUS team

Hubble shows the local Universe in ultraviolet

Hubble shows the local Universe in ultraviolet Using the unparalleled sharpness and ultraviolet observational capabilities of the NASA/ESA Hubble Space Telescope, an international team of…

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Galaxy cluster MACS J1149.5+2223 taken with the Hubble Space Telescope. The inset image is the very distant galaxy MACS1149-JD1. ALMA (ESO/NAOJ/NRAO), NASA/ESA Hubble Space Telescope, W. Zheng (JHU), M. Postman (STScI), the CLASH Team, Hashimoto et al., CC BY-SA

When did the lights first come on in the universe? A galaxy close to the dawn of time gives a clue

When did the lights first come on in the universe? A galaxy close to the dawn of time gives a clue Galaxy cluster MACS J1149.5+2223…

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These six images represent the variety of star-forming regions in nearby galaxies. The galaxies are part of the Hubble Space Telescope's Legacy ExtraGalactic UV Survey (LEGUS), the sharpest, most comprehensive ultraviolet-light survey of star-forming galaxies in the nearby universe. The six images consist of two dwarf galaxies (UGC 5340 and UGCA 281) and four large spiral galaxies (NGC 3368, NGC 3627, NGC 6744, and NGC 4258). The images are a blend of ultraviolet light and visible light from Hubble's Wide Field Camera 3 and Advanced Camera for Surveys. Credits: NASA/ESA/LEGUS team

Astronomers Release Most Complete Ultraviolet-Light Survey of Nearby Galaxies

Astronomers Release Most Complete Ultraviolet-Light Survey of Nearby Galaxies Capitalizing on the unparalleled sharpness and spectral range of NASA’s Hubble Space Telescope, an international team…

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