galaxies

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Tag: Bad Astronomy

Tag: brown dwarfs

A billion galaxies lurk in a 10 trillion pixel map of the sky

Phil Plait

A small group of galaxies called the Copeland Septet, seen in the DESI Legacy Sky Surveys. Credit: DESI Legacy Imaging Surveys/LBNL/DOE & KPNO/CTIO/NOIRLab/NSF/AURA

Tag: Bad Astronomy

Tag: brown dwarfs

Tag: Bad Astronomy

Tag: galaxy collisions

Hubble's half-dozen cosmic train wrecks

Phil Plait

Jan 22, 2021

NGC 6052 is a pair of colliding spiral galaxies, part of a survey to look at star clusters that form in the aftermath. Credit: ESA/Hubble & NASA, A. Adamo et al.

Tag: Bad Astronomy

Tag: galaxy collisions

Tag: Bad Astronomy

How do you find when a supernova blew? Run the clock backwards.

Phil Plait

Jan 18, 2021

The supernova remnant 1E 0102.2-7219, seen by Hubble Space Telescope. Careful measurements of the expanding debris over time has indicated the star blew up 1738 (±175) years ago. Gas colored blue is moving toward Earth, gas colored red moving away.

Tag: Bad Astronomy

Tag: Bad Astronomy

Tag: supermassive black holes

So how many supermassive black holes *are* there in Holmberg 15A anyway?

Phil Plait

Jan 11, 2021

Abell 85, a galaxy cluster with over 400 galaxy members. Holmberg 15A is the central elliptical galaxy, and is extremely massive. Credit: Matthias Kluge/USM/MPE

Tag: Bad Astronomy

Tag: supermassive black holes

Tag: Black Holes

This galaxy is spawning stars too fast for its monster black hole to eat them

Elizabeth Rayne

Dec 18, 2020

NASA image of CQ 4479

Tag: Black Holes

Tag: Bad Astronomy

Like a runaway locomotive, NGC 1265 is leaving a 'smoke' trail behind it

Phil Plait

Dec 3, 2020

NGC 1265 is a galaxy blowing tremendously long jets of gas that emit radio waves, and as it moves through gas between galaxies those jets get blown back. Credit: M. Gendron-Marsolais et al.; S. Dagnello, NRAO/AUI/NSF; SDSS.

Tag: Bad Astronomy

Tag: Bad Astronomy

You think *you're* isolated today? Meet the galaxy MCG+01-02-015

Phil Plait

Nov 26, 2020

The galaxy MCG+01-02-015, a lovely spiral that happens to sit in a very empty region of the Universe. Credit: ESA/Hubble & NASA and N. Gorin (STScI) and Judy Schmidt

Tag: Bad Astronomy

Tag: Bad Astronomy

The tweet that led to a science paper about galactic crepuscular rays

Phil Plait

Nov 23, 2020

IC 5063 is an active galaxy where shadows tens of thousands of light years long are being cast from the center. Credit: NASA, ESA, STScI and W. P . Maksym (CfA)

Tag: Bad Astronomy

Tag: Black Holes

How do you feed the insatiable appetite of a nuclear black hole?

Elizabeth Rayne

Nov 10, 2020

spiral galaxy M51

Tag: Black Holes

Tag: Bad Astronomy

Tag: supermassive black holes

Astronomers get a front row seat to a star getting torn apart by a huge black hole

Phil Plait

Oct 12, 2020

Artwork depicting a tidal disruption event, when a star is torn apart by a black hole. A stream of matter is puller off, forming a disk around the black hole and creating an outflow of high-speed material. Credit: ESO/M. Kornmesser

Tag: Bad Astronomy

Tag: supermassive black holes

Tag: Bad Astronomy

Not aliens but ORCs: What are these mysterious giant radio rings in the sky?

Phil Plait

Sep 10, 2020

ORC 1, a ring of radio emission in the sky that is as yet unexplained. Credit: Norris et al.

Tag: Bad Astronomy

Tag: Bad Astronomy

Why is there a normal galaxy sitting at the edge of the Universe?

Phil Plait

Sep 7, 2020

The ALMA image of the very distant galaxy SPT0418, distorted into a ring due to the gravity of an intervening galaxy. Credit: ALMA (ESO/NAOJ/NRAO), Rizzo et al.

Tag: Bad Astronomy

Tag: Bad Astronomy

The Andromeda galaxy's halo is already colliding with the Milky Way's

Phil Plait

Aug 31, 2020

Artwork depicting the halo of the Andromeda galaxy (purple) superposed on an image of the night sky to show its scale. Credit: NASA, ESA, J. DePasquale and E. Wheatley (STScI) and Z. Levay

Tag: Bad Astronomy

Tag: star formation

Is the Milky Way evolving right before our eyes? Something it just spewed out could mean exactly that

Elizabeth Rayne

Aug 26, 2020

NASA image of the Milky Way

Tag: star formation

Tag: Bad Astronomy

How to make a blazar: Slam two galaxies together and watch them feed a huge black hole

Phil Plait

Aug 13, 2020

Artist drawing of a blazar, a galaxy with a supermassive black hole spewing out energy. Credit: DESY, Science Communication Lab

Tag: Bad Astronomy

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