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.
Ares 3 Landing Site: The Martian Revisited
This close-up from the Mars Reconnaissance Orbiter's HiRISE camera shows weathered craters and windblown deposits in southern Acidalia Planitia . A striking shade of blue in…
Phobos: Moon over Mars
A tiny moon with a scary name , Phobos emerges from behind the Red Planet in this timelapse sequence from the Earth-orbiting Hubble Space Telescope . Over 22 minutes the 13…
The Leo Trio
This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring . Famous as the Leo Triplet , the three magnificent galaxies found…
The Eyes in Markarian's Galaxy Chain
Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain . Prominent in Markarian's Chain are these two interacting galaxies , NGC 4438…
A Picturesque Equinox Sunset
What's that at the end of the road? The Sun. Many towns have roads that run east-west, and on two days each year, the Sun rises and sets right down the middle . Today, in some…
Comet Pons-Brooks' Swirling Coma
A bright comet will be visible during next month's total solar eclipse. This very unusual coincidence occurs because Comet 12P/Pons-Brooks 's return to the inner Solar System…
NGC 7714: Starburst after Galaxy Collision
Is this galaxy jumping through a giant ring of stars ? Probably not. Although the precise dynamics behind the featured image is yet unclear, what is clear is that the pictured…
ELT and the Milky Way
The southern winter Milky Way sprawls across this night skyscape. Looking due south, the webcam view was recorded near local midnight on March 11 in dry, dark skies over the…
Portrait of NGC 1055
Big, beautiful spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the aquatically intimidating constellation Cetus .…
Moon Pi and Mountain Shadow
What phase of the Moon is 3.14 radians from the Sun? The Full Moon, of course. Even though the Moon might look full for several days, the Moon is truly at its full phase when it…
The Seagull Nebula
A broad expanse of glowing gas and dust presents a bird-like visage to astronomers from planet Earth , suggesting its popular moniker: the Seagull Nebula . This portrait of the…
A Galaxy-Shaped Rocket Exhaust Spiral
What's that over the horizon? What may look like a strangely nearby galaxy is actually a normal rocket's exhaust plume -- but unusually backlit. Although the SpaceX Falcon 9…
A Full Plankton Moon
What glows in the night? This night featured a combination of usual and unusual glows. Perhaps the most usual glow was from the Moon , a potentially familiar object. The full…
A Total Eclipse at the End of the World
Would you go to the end of the world to see a total eclipse of the Sun? If you did, would you be surprised to find someone else there already? In 2003, the Sun , the Moon,…
Comet Pons-Brooks in Northern Spring
As spring approaches for northern skygazers, Comet 12P/Pons-Brooks is growing brighter. Currently visible with small telescopes and binoculars, the Halley-type comet could reach…
The Tarantula Zone
The Tarantula Nebula , also known as 30 Doradus, is more than a thousand light-years in diameter, a giant star forming region within nearby satellite galaxy the Large Magellanic…
The Crew-8 Nebula
Not the James Webb Space Telescope's latest view of a distant galactic nebula, this cloud of gas and dust dazzled spacecoast skygazers on March 3. The telephoto snapshot was taken…
M102: Edge-on Disk Galaxy
What kind of celestial object is this? A relatively normal galaxy -- but seen from its edge. Many disk galaxies are actually just as thin as NGC 5866, the Spindle galaxy, pictured…
NGC 2170: Angel Nebula Abstract Art
Is this a painting or a photograph? In this celestial abstract art composed with a cosmic brush, dusty nebula NGC 2170 , also known as the Angel Nebula, shines just above the…
Light Pillars Over Inner Mongolia
What's happening across that field? Pictured here are not auroras but nearby light pillars , a phenomenon typically much closer. In most places on Earth , a lucky viewer can see a…
A Total Solar Eclipse Close-Up in Real Time
How would you feel if the Sun disappeared? Many eclipse watchers across the USA surprised themselves in 2017 with the awe that they felt and the exclamations that they made as the…
Odysseus on the Moon
Methalox rocket engine firing, Odysseus' landing legs absorb first contact with the lunar surface in this wide-angle snapshot from a camera on board the robotic Intuitive Machines…
Odysseus and The Dish
Murriyang, the CSIRO's Parkes Radio Telescope , points toward a nearly Full Moon in this image from New South Wales, Australia, planet Earth. Bathed in moonlight, the 64 meter…
Julius Caesar and Leap Days
In 46 BC Julius Caesar reformed the calendar system . Based on advice by astronomer Sosigenes of Alexandria , the Julian calendar included one leap day every four years to account…
Viewing discoveries from 23 March 2024 through 29 February 2024.