Browse NASA Astronomy Picture of the Day archive by date and media: Archive Discoveries
Browse the NASA APOD archive without needing the exact date first. Filter by media type and keep moving deeper into older images and videos.
NGC 2403 in Camelopardalis
Magnificent island universe NGC 2403 stands within the boundaries of the long-necked constellation Camelopardalis. Some 10 million light-years distant and about 50,000 light-years…
Rotating Moon from LRO
No one, presently, sees the Moon rotate like this. That's because the Earth's moon is tidally locked to the Earth, showing us only one side. Given modern digital technology,…
Stereo Helene
Get out your red/blue glasses and float next to Helene, small, icy moon of Saturn. Appropriately named, Helene is a Trojan moon, so called because it orbits at a Lagrange point .…
The Nebulous Realm of WR 134
Made with narrowband filters, this cosmic snapshot covers a field of view over twice as wide as the full Moon within the boundaries of the constellation Cygnus. It highlights the…
A Lunar Corona over Paris
Why does a cloudy moon sometimes appear colorful? The effect , called a lunar corona , is created by the quantum mechanical diffraction of light around individual, similarly-sized…
Stairway to the Milky Way
What happens if you ascend this stairway to the Milky Way? Before answering that, let's understand the beautiful sky you will see. Most eye-catching is the grand arch of the Milky…
Solar X Flare as Famous Active Region Returns
It's back. The famous active region on the Sun that created auroras visible around the Earth earlier this month has survived its rotation around the far side of the Sun -- and…
Chamaeleon I Molecular Cloud
Dark markings and bright nebulae in this telescopic southern sky view are telltale signs of young stars and active star formation . They lie a mere 650 light-years away, at the…
A Solar Filament Erupts
What's happened to our Sun? Nothing very unusual -- it just threw a filament . Toward the middle of 2012, a long standing solar filament suddenly erupted into space, producing an…
Manicouagan Impact Crater from Space
Orbiting 400 kilometers above Quebec, Canada, planet Earth, the International Space Station Expedition 59 crew captured this snapshot of the broad St. Lawrence River and curiously…
M78 from the Euclid Space Telescope
Star formation can be messy. To help find out just how messy, ESA 's new Sun-orbiting Euclid telescope recently captured the most detailed image ever of the bright star forming…
Unraveling NGC 3169
Spiral galaxy NGC 3169 looks to be unraveling like a ball of cosmic yarn. It lies some 70 million light-years away, south of bright star Regulus toward the faint constellation…
Green Aurora over Sweden
It was bright and green and stretched across the sky. This striking aurora display was captured in 2016 just outside of Östersund , Sweden . Six photographic fields were merged to…
CG4: The Globule and the Galaxy
Can a gas cloud eat a galaxy? It's not even close. The “claw” of this odd looking “creature” in the featured photo is a gas cloud known as a cometary globule . This globule,…
Aurora Dome Sky
It seemed like night, but part of the sky glowed purple. It was the now famous night of May 10, 2024, when people over much of the world reported beautiful aurora-filled skies .…
Jupiter Diving
Take this simulated plunge and dive into the upper atmosphere of Jupiter, the Solar System's ruling gas giant. The awesome animation is based on image data from JunoCam, and the…
North Celestial Aurora
Graceful star trail arcs reflect planet Earth's daily rotation in this colorful night skyscape. To create the timelapse composite, on May 12 consecutive exposures were recorded…
Aurora Banks Peninsula
This well-composed composite panoramic view looks due south from Banks Peninsula near Christchurch on New Zealand's South Island. The base of a tower-like rocky sea stack is awash…
Aurora Georgia
A familiar sight from Georgia, USA, the Moon sets near the western horizon in this rural night skyscape. Captured on May 10 before local midnight, the image overexposes the Moon's…
AR 3664 at the Sun's Edge
What did the monster active region that created the recent auroras look like when at the Sun's edge? There, AR 3664 better showed its 3D structure. Pictured, a large multi-pronged…
The 37 Cluster
For the mostly harmless denizens of planet Earth, the brighter stars of open cluster NGC 2169 seem to form a cosmic 37 . Did you expect 42 ? From our perspective, the improbable…
AR 3664 on a Setting Sun
It was larger than the Earth. It was so big you could actually see it on the Sun's surface without magnification. It contained powerful and tangled magnetic fields as well as…
Red Aurora over Poland
Northern lights don't usually reach this far south. Magnetic chaos in the Sun's huge Active Region 3664 , however, produced a surface explosion that sent a burst of electrons,…
AR 3664: Giant Sunspot Group
Right now, one of the largest sunspot groups in recent history is crossing the Sun. Active Region 3664 is not only big -- it's violent, throwing off clouds of particles into the…
Viewing discoveries from 3 June 2024 through 11 May 2024.