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Astronomy

miscellanyHubble Space TelescopeMarsclimate changesupernovaeexoplanetscometssolar systemESA2025Jupiterwhite dwarfsPlutoaliensdustasteroidsneutron starsastrophotographymeteoritesstar clustersvolcanoesmathEarthcosmologypulsarsmoonsthe SunscifiFast Radio BurstsVera Rubin ObservatorynebulaAstronomybrown dwarfsNASAPoliticsgalaxy clusterslight pollutionplanetary nebulaedebunkingblack holesphysicsTVgravitational lensingVenusAbout the newsletterMoonAbout meimpactsnovaebinary starsSgr A*starsTNOssciencegalaxiesJWSTGamma-ray burstsColliding galaxiesMilky Way GalaxyScientific AmericanGaia
miscellanymiscellany
+6+6
The astronomer who discovered what the universe was made of
11 hours ago

The astronomer who discovered what the universe was made of

Cecelia Payne-Gaposchkin was an amazing scientist, and her work wasn’t all that long ago

Philip Plait
Philip Plait
miscellanymiscellany
+4+4
How incomplete are we?
Mar 24, 2026
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How incomplete are we?

Completeness is an important concept for surveys in astronomy

Philip Plait
Philip Plait
exoplanetsexoplanets
+5+5
The woman who discovered the first black hole
Nov 18, 2025

The woman who discovered the first black hole

Betty Webster is a name to remember. Also: more rogue binary jovians

Philip Plait
Philip Plait
asteroidsasteroids
+2+2
Taurus in 3D!
Jun 03, 2025

Taurus in 3D!

Cool animation does a big circle around a nearby star cluster

Philip Plait
Philip Plait
solar systemsolar system
+4+4
Amateurs aid astronomers’ ammonia ascertainment, Lovely short flick about the Kármán Line
May 22, 2025
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Amateurs aid astronomers’ ammonia ascertainment, Lovely short flick about the Kármán Line

Jupiter’s clouds are now more easily mapped

Philip Plait
Philip Plait
AstronomyAstronomy
+3+3
Is the WR 104 system pointing a gamma-ray burst at Earth? Probably not.
May 05, 2025

Is the WR 104 system pointing a gamma-ray burst at Earth? Probably not.

New observations indicate it’s aimed away from us

Philip Plait
Philip Plait
EarthEarth
+3+3
INCREDIBLE SPACE PHOTO: The lunar eclipse seen from the Moon!
Mar 17, 2025

INCREDIBLE SPACE PHOTO: The lunar eclipse seen from the Moon!

Also, come see me at GalaxyCon in Richmond, Virginia, March 27-29!

Philip Plait
Philip Plait
exoplanetsexoplanets
+3+3
Four planets for Barnard’s Star! Also Danger, Will Robinson!
Mar 13, 2025
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Four planets for Barnard’s Star! Also Danger, Will Robinson!

The nearest solo star in the Universe has four planets orbiting it, and I still love “Lost in Space”

Philip Plait
Philip Plait
AstronomyAstronomy
+3+3
The chance of an impact from the asteroid 2024 YR4 just went way down
Feb 24, 2025

The chance of an impact from the asteroid 2024 YR4 just went way down

It’ll likely drop to zero, but it may be a while before we know for sure

Philip Plait
Philip Plait
AstronomyAstronomy
+1+1
Black hole versus White Dwarf!
Jan 21, 2025

Black hole versus White Dwarf!

A colossal supermassive black hole is (possibly) tangling with a tiny white dwarf. Guess who’ll win?

Philip Plait
Philip Plait
AstronomyAstronomy
+3+3
Two colossal stars send out waves of dust in an amazing JWST image
Jan 20, 2025

Two colossal stars send out waves of dust in an amazing JWST image

WR 140 is a terrifying star system, but it sure is beautiful. Also, announcing a new rate for the newsletter.

Philip Plait
Philip Plait
meteoritesmeteorites
+4+4
A wee meteorite impact caught on video, Gaia closes its eyes
Jan 16, 2025

A wee meteorite impact caught on video, Gaia closes its eyes

Very rare footage of a mini-impact, and the Gaia spacecraft has been shut down

Philip Plait
Philip Plait
Everything, the Universe, and Life

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