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Astronomy Picture Of the Day (APOD)
APOD: 2025 August 1 Б Small Dark Nebula
31.07.2025
A small, dark, nebula looks isolated near the center of this telescopic close-up. The wedge-shaped cosmic cloudlet lies within a relatively crowded region of space though. About 7,000 light-years distant and filled with glowing gas and an embedded cluster of young stars, the region is known as M16 or the Eagle Nebula.
APOD: 2025 July 31 Б Supernova 2025rbs in NGC 7331
30.07.2025
A long time ago in a galaxy 50 million light-years away, a star exploded. Light from that supernova was first detected by telescopes on planet Earth on July 14th though, and the extragalactic transient is now known to astronomers as supernova 2025rbs.
APOD: 2025 July 30 Б Coronal Loops on the Sun
29.07.2025
Our Sun frequently erupts in loops. Hot solar plasma jumps off the Sun's surface into prominences, with the most common type of prominence being a simple loop. The loop shape originates from the Sun's magnetic field, which is traced by spiraling electrons and protons.
APOD: 2025 July 29 Б A Helix Nebula Deep Field
28.07.2025
Is the Helix Nebula looking at you? No, not in any biological sense, but it does look quite like an eye. The Helix Nebula is so named because it also appears that you are looking down the axis of a helix.
APOD: 2025 July 27 Б Lightning over the Volcano of Water
26.07.2025
Have you ever watched a lightning storm in awe? You're not alone. Details of what causes lightning are still being researched, but it is known that inside some clouds, internal updrafts cause collisions between ice and snow that slowly separate charges between cloud tops and bottoms.
APOD: 2025 July 26 Б Globular Cluster Omega Centauri
25.07.2025
Globular star cluster Omega Centauri packs about 10 million stars much older than the Sun into a volume some 150 light-years in diameter. Also known as NGC 5139, at a distance...
APOD: 2025 July 25 Б Twelve Years of Kappa Cygnids
24.07.2025
Meteors from the Kappa Cygnid meteor shower are captured in this time-lapse composite skyscape. The minor meteor shower, with a radiant not far from its eponymous star Kappa Cygni, peaks in mid-August, almost at the same time as the much better-known and better-observed Perseid meteor shower.
APOD: 2025 July 24 Б Titan Shadow Transit
23.07.2025
Every 15 years or so, Saturn's rings are tilted edge-on to our line of sight. As the bright, beautiful ring system grows narrower and fainter it becomes increasingly difficult to see for denizens of planet Earth.
APOD: 2025 July 23 Б Fireball over Cape San Blas
22.07.2025
Have you ever seen a fireball? In astronomy, a fireball is a very bright meteor -- one at least as bright as Venus and possibly brighter than even a full Moon. Fireballs are rare -- if you see one you are likely to remember it for your whole life.
APOD: 2025 July 22 Б A Double Detonation Supernova
21.07.2025
Can some supernovas explode twice? Yes, when the first explosion acts like a detonator for the second. This is a leading hypothesis for the cause of supernova remnant (SNR) 0509-67
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