Astronomy is a branch of science that deals with the study of celestial objects (including stars, planets, moons, comets, asteroids ...
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APOD Science APOD APOD: 2026 September 13 - 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 ...
Mercury is in retrograde.
Astronomers believe that if the Sun devoured an Earth-like planet in the past, we can find the "fingerprints" of its crimes.
Today's Milky Way only forms stars slowly. Our galactic center, where the star-forming rate is highest, gives a unique window into ourContinue reading on Starts With A Bang! ยป
Swallowing the evidence.
Webb's NIRCam and MIRI cameras filled a 2.5-by-1.8-arcminute frame with the inner parsec of the Milky Way, a packed star field 26,000 light-years away in Sagittarius. IRS 3 sits in that crowd, a cool, luminous asymptotic giant branch star only 0.55 . ...
Scientists Just Found 84 'Mysterious Objects' in Space That Defy Everything They Know About Galaxies
Astronomers identified 84 hypersoft X-ray sources in six galaxies by reanalysing NASA's Chandra archive, revealing an unusual emission pattern that may illuminate supernovae and galactic ionisation ...
APOD Science APOD APOD: 2026 September 11 - 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 ...
Mustafa Muhibullah did not set out to name a new class of object. He was a University of Alabama graduate student working through public Chandra X-ray Observatory files that other groups had already used. In the softest sliver of those files, sources ...