galaxies

miscellanyHubble Space TelescopeMarsclimate changesupernovaeexoplanetscometssolar systemESA2025Jupiterwhite dwarfsPlutoaliensdustasteroidsastrophotographymeteoritesstar clustersvolcanoesmathEarthcosmologymoonsthe SunscifiFast Radio BurstsVera Rubin ObservatorynebulaAstronomybrown dwarfsNASAPoliticsgalaxy clusterslight pollutiondebunkingblack holesphysicsTVgravitational lensingAbout the newsletterMoonAbout meimpactsnovaebinary starsSgr A*starsTNOssciencegalaxiesJWSTGamma-ray burstsColliding galaxiesMilky Way GalaxyScientific AmericanGaia
Hubble Space TelescopeHubble Space Telescope
+6+6
Happy solstice, and a gorgeous galaxy with which to measure the Universe

Happy solstice, and a gorgeous galaxy with which to measure the Universe

The longest night is now behind us, and a Hubble image of a galaxy used as a ruler

Philip Plait
Philip Plait
exoplanetsexoplanets
+5+5
A new binary star exoplanet image, and a very cool five-point Einstein Cross
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A new binary star exoplanet image, and a very cool five-point Einstein Cross

See a direct image of the planet, and a quintuply gravitationally lensed galaxy

Philip Plait
Philip Plait
astrophotographyastrophotography
+5+5
Mystery solved? Baffling huge nebula near Andromeda Galaxy is actually in our neighborhood

Mystery solved? Baffling huge nebula near Andromeda Galaxy is actually in our neighborhood

Weird arcing cloud of oxygen is most likely part of the Milky Way, not our giant neighbor

Philip Plait
Philip Plait
dustdust
+5+5
Powers of Chandra and JWST unite!
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Powers of Chandra and JWST unite!

The two great telescopes combine to make amazing science and gorgeous images

Philip Plait
Philip Plait
supernovaesupernovae
+5+5
The irony of Supernova 1885A

The irony of Supernova 1885A

It proved the Universe was bigger than astronomers thought, but they couldn’t believe it

Philip Plait
Philip Plait
Hubble Space TelescopeHubble Space Telescope
+4+4
NGC 3370: Stepladder to the Universe

NGC 3370: Stepladder to the Universe

Also, it’s a very pretty spiral galaxy

Philip Plait
Philip Plait
cosmologycosmology
+5+5
A Little Red Dot may be a mostly naked supermassive black hole
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A Little Red Dot may be a mostly naked supermassive black hole

This has implications for how such behemoths form in the first place

Philip Plait
Philip Plait
asteroidsasteroids
+6+6
A black hole is eating way above its weight, and ancient tektites in Australia
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A black hole is eating way above its weight, and ancient tektites in Australia

Something is helping this black hole gobble down material at incredible rates

Philip Plait
Philip Plait
dustdust
+6+6
Little Red Dots at the edge of the universe may be black holes powering gigantic balls of gas

Little Red Dots at the edge of the universe may be black holes powering gigantic balls of gas

These “Black Hole Stars” are theoretical, but do explain what we see

Philip Plait
Philip Plait
black holesblack holes
+1+1
What is twisting up this blazar’s immensely powerful death ray?
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What is twisting up this blazar’s immensely powerful death ray?

There’s a lot going on with OJ287.

Philip Plait
Philip Plait
Hubble Space TelescopeHubble Space Telescope
+5+5
Is the most distant star ever seen really a star at all?

Is the most distant star ever seen really a star at all?

Also, a new moon for Quaoar! Maybe!

Philip Plait
Philip Plait
astrophotographyastrophotography
+3+3
It’s an umbrella, but it’s a hundred thousand light-years long

It’s an umbrella, but it’s a hundred thousand light-years long

Galaxy collisions do really weird things

Philip Plait
Philip Plait