Astronomy & Universe
APOD Features Stickney Crater on October 9, 2026
The Astronomy Picture of the Day showcased the Stickney Crater on October 9, 2026, accompanied by a brief explanation from a professional astronomer.
Astronomy & Universe
Telescopes, exoplanets, black holes and cosmic discoveries.
Astronomy & Universe
Webb Telescope Unveils Hidden Stars in Nebula NGC 7129
The James Webb Space Telescope has penetrated dusty clouds to reveal dozens of newly visible stars in the star‑forming region NGC 7129.
Astronomy & Universe
APOD Features Selfie at Vera Rubin Ridge
The Astronomy Picture of the Day showcases a rover selfie taken at Vera Rubin Ridge on Mars on October 3, 2026.
Astronomy & Universe
Harvest Moon Over Erupting Etna
The APOD image of 1 October 2026 shows the full Harvest Moon rising behind the erupting Mount Etna on Sicily.
Astronomy & Universe
Sunrise-III Reveals Intricate Magnetic Structures in Quiet Solar Regions
The stratospheric balloon observatory Sunrise-III has uncovered unexpectedly fine magnetic structures in otherwise quiet areas of the Sun.
Astronomy & Universe
Faint stellar system may be a satellite of a satellite
Astronomers have found an extremely faint stellar grouping near the Fornax dwarf galaxy using Euclid data.
Astronomy & Universe
Lab Experiment Solves Ancient Star's Strontium Puzzle
A team led by Caley M. Harris has shown that elaborate laboratory work can explain the unexpected strontium abundance in a very old star.
Astronomy & Universe
Astronomers Discover a Retrograde Sub-Neptune Around a Red Dwarf
An exoplanet orbits its red dwarf host star in the opposite direction to the star’s spin – the first such finding for this type of star.
Astronomy & Universe
Webb detects ammonia and unexpected chill on a distant giant planet
The James Webb Space Telescope has found water, methane and ammonia in the atmosphere of HATS-6 b, revealing the planet to be significantly cooler than predicted.
Astronomy & Universe
Omega Centauri Featured in APOD on September 25, 2026
The Astronomy Picture of the Day showcased a detailed view of the Milky Way’s most massive globular cluster.
Astronomy & Universe
Faint young stars reveal that Messier 74 may be twice as large as previously thought
Astronomers have detected a faint population of young stars far beyond the known edge of the spiral galaxy Messier 74. This suggests the galaxy could be nearly twice as large as earlier estimates.