galaxies

Artist drawing of a blazar, a galaxy with a supermassive black hole spewing out energy. Credit: DESY, Science Communication Lab
Record-breaking blazar found 12.8 *billion* light years from Earth
Phil Plait
Mar 9, 2020
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Tag: Bad Astronomy
Tag: supermassive black holes
Tag: active galaxies
Tag: quasars
Tag: Hubble Space Telescope

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Yo, I heard you like galaxy collisions so I put a galaxy collision in your galaxy collision
Phil Plait
Feb 7, 2020
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NGC 4490, a galaxy bursting with star formation after a recent close encounter with a smaller galaxy. Credit: ESA/Hubble & NASA Acknowledgements: D. Calzetti (UMass) and the LEGUS Team, J. Maund (University of Sheffield), and R. Chandar (University of To
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A huge distant galaxy went from making billions of stars to suddenly stopping. Why?
Phil Plait
Feb 6, 2020
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The hugely sprawling Tarantula Nebula, a vast star-forming complex in a nearby satellite galaxy of the Milky Way. It's currently making hundreds of thousands of stars. Credit: ESO
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In dwarf galaxies, a black hole wind is rising
Phil Plait
Jan 27, 2020
Black hole with accretion disk and jets
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Tag: Spiral Galaxies
Hubble's spectacular view of UGC 2885: Is this the biggest spiral galaxy in the Universe?
Phil Plait
Jan 9, 2020
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The enormous spiral galaxy UGC 2885, nicknamed “Rubin’s Galaxy” after astronomer Vera Rubin. It may be the largest spiral galaxy known. Credit: NASA, ESA, and B. Holwerda (University of Louisville)
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The care and feeding of baby supermassive black holes
Phil Plait
Jan 7, 2020
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In this piece of art, an active galaxy called a quasar blasts out energy and matter in two jets which blow matter away from it. However, it’s also surrounded by a huge halo of gas (blue) that can fall toward the center.
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NGC 4455: A nearby galaxy that's the stepping stone to the Universe
Phil Plait
Jan 3, 2020
The relatively nearby galaxy NGC 4455, observed by Hubble specifically to find its distance. Credit: ESA/Hubble & NASA, I. Karachentsev et al.
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When galaxies collide, you get… a heron?
Phil Plait
Dec 20, 2019
The galaxies NGC 5394 and 5395, undergoing a very close pass that’s affecting both of them. ​​​​​​​Credit: NSF’s National Optical-Infrared Astronomy Research Laboratory/Gemini Observatory/AURA
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Across the Universe, it's the normal galaxies doing all the star-making work
Phil Plait
Dec 18, 2019
130 hours of MeerKAT observations in radio wavelengths yielded an image of tens of thousands of normal galaxies at distances of billion of light years. Credit: SARAO; NRAO/AUI/NSF
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Take a mesmerizing trip inside the most detailed galactic simulation ever created
Jeff Spry
Nov 20, 2019
galaxy hero
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The Sunburst Arc: A quirk of gravity reveals how the infant Universe lit up
Phil Plait
Nov 18, 2019
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Detail of one Starburst Arc shows several bright knots; each is an image of the same region of the lensed galaxy replicated through the lensing process. Credit: ESA/Hubble, NASA, Rivera-Thorsen et al.
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A flocculent spiral galaxy with a really, really weird middle
Phil Plait
Nov 15, 2019
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A close-up of the central region of NGC 2775, showing how the arms end abruptly, giving way to a smooth distribution of stars. Credit: NASA/ESA/Hubble Space Telescope/Janice Lee, processed by Judy Schmidt
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Why is this anemic galaxy’s central black hole so beefy?
Phil Plait
Nov 1, 2019
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artwork of a black hole accretion disk
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Super spiral galaxies are huge and bright… and spin *really* rapidly
Phil Plait
Oct 21, 2019
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Super spirals are huge spiral galaxies far larger and more massive than the Milky Way. Credit: NASA, ESA, P. Ogle and J. DePasquale (STScI). Bottom row: SDSS, P. Ogle and J. DePasquale (STScI)
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The Milky Way stole a lot of its satellite galaxies from another small galaxy
Phil Plait
Oct 15, 2019
The Milky Way is a disk galaxy with hundreds of billions of stars. A new study indicates it underwent a burst of vigorous star formation that peaked about 2 billion years ago. Credit: NASA/JPL-Caltech/R. Hurt (SSC/Caltech)
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Tag: Andromeda galaxy
The Andromeda Galaxy ate its small friends… twice
Phil Plait
Oct 9, 2019
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The Andromeda Galaxy grew by eating smaller galaxies. Credit: Local Group Survey Team and T.A. Rector (University of Alaska Anchorage) / Phil Plait
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