Astronomers using JWST have discovered that massive early galaxies contain far more small, faint stars than expected. That hidden population could make some of these galaxies three to four times more massive than previous estimates. The finding makes ...
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APOD Science APOD APOD: 2026 August 22 Today's APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is ...
Newton thought that gravitation would happen instantly, propagating at infinite speeds. Einstein showed otherwise; gravity isn't instant.Continue reading on Starts With A Bang! ยป
A selection of winning images from DarkSky International's 2026 Capture the Dark photography contest.
APOD Science APOD APOD: 2026 August 20 - The Today's APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating ...
Star's extreme proximity to Sagittarius A* means it could open new window onto black hole's fundamental properties ...
Star, moving at 8% the speed of light, may let us measure the black hole's rotation.
The star passes very close to the Milky Way's supermassive black hole and could reveal the black hole's spin by tracking how it warps the star's orbit.
APODScienceAPODAPOD: 2026 August 19 - TheToday's APODArchiveSubmissionsIndexSearchCalendarRSSEducationAboutDiscuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured ...
Astronomers have uncovered concrete evidence of the earliest known galactic merger in the Milky Way's history.