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.
The Hill, The Moon, and Saturn
Last Sunday when the Moon was young its sunlit crescent hung low near the western horizon at sunset. With strong earthshine it was joined by Saturn shining in the early evening…
Comet 46P/Wirtanen
Periodic Comet 46P/Wirtanen is now the brightest comet in the night sky, but too faint to be seen by eye. From dark sky sites it could just become naked-eye visible though, as its…
The Cave Nebula in Hydrogen, Oxygen, and Sulfur
What's inside this cosmic cave? A stellar nursery 10 light-years deep. The featured skyscape is dominated by dusty Sh2-155 , the Cave Nebula. In the telescopic image, data taken…
Rotating Asteroid Bennu from OSIRIS-REx
Could this close-by asteroid ever hit the Earth? Eventually yes -- but probably not for a very long time, even though the asteroid is expected to pass inside the orbit of the Moon…
The Lagoon Nebula is Stars, Gas, and Dust
The majestic Lagoon Nebula is filled with hot gas and the home for many young stars. Spanning 100 light years across while lying only about 5000 light years distant, the Lagoon…
Astronaut Exploring: An Apollo 15 Panorama
What would it be like to explore the Moon? NASA's Apollo missions gave humans just this chance in the late 1960s and early 1970s. In particular, the Apollo 15 mission was…
The Old Moon in the Young Moon's Arms
Tonight the Moon is young again , but this stunning image of a young Moon near the western horizon was taken just after sunset on October 10. On the lunar disk Earthshine,…
Little Planet Lookout
Don't panic . This little planet projection looks confusing, but it's actually just a digitally warped and stitched, nadir centered mosaic of images that covers nearly 360x180…
Mars in the Loop
This composite of images spaced some 5 to 9 days apart, from late April (bottom right) through November 5 (top left), traces the retrograde motion of ruddy-colored Mars through…
NGC 6188: The Dragons of Ara
Dark shapes with bright edges winging their way through dusty NGC 6188 are tens of light-years long. The emission nebula is found near the edge of an otherwise dark large…
NGC 1499: The California Nebula
There's even a California in space. Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast…
IC 4592: The Blue Horsehead Reflection Nebula
Do you see the horse's head? What you are seeing is not the famous Horsehead nebula toward Orion but rather a fainter nebula that only takes on a familiar form with deeper…
Flying Saucer Crash Lands in Utah Desert
A flying saucer from outer space crash-landed in the Utah desert after being tracked by radar and chased by helicopters. The year was 2004, and no space aliens were involved. The…
Lunar LOVE
A more creative search by a group of amateur astronomers in the Ehime Prefecture of Shikoku Island, Japan has found lunar L-O-V-E . Their secret was an examination of this sharp…
Cygnus Shell Supernova Remnant W63
The ghost of a long-dead star , the W63 supernova remnant shines like a faint cosmic smoke-ring along the plane of the Milky Way galaxy toward the northern constellation Cygnus…
Hayabusa2 Ascends from Asteroid Ryugu
Will spacecraft Hayabusa2 be able to land safely on asteroid Ryugu? Since arriving in June, pictures show that the surface of kilometer-sized Ryugu is covered with boulders, so…
R Leporis: A Vampire's Star
Better known as Hind's Crimson Star , R Leporis is a rare star in planet Earth's night sky. It's also a shocking shade of red. The star's discoverer, 19th century English…
Orionids Meteors over Inner Mongolia
Meteors have been shooting out from the constellation of Orion. This was expected, as October is the time of year for the Orionids Meteor Shower . Pictured here, over two dozen…
Shells of Stars in Elliptical Galaxy PGC 42871
How do galaxies grow? To help find out, the Hubble Space Telescope was deployed to image the unusual elliptical galaxy PGC 42871. How this galaxy came to be surrounded by numerous…
Ultraviolet Earth from an Observatory on the Moon
Which planet is this? Earth . The featured false color picture shows how the Earth shines in ultraviolet (UV) light. The image is historic because it was taken from the surface of…
Airglow Borealis
The best known asterism in northern skies hangs over the Canadian Rockies in this mountain and night skyscape taken last week from Banff National Park. But most remarkable is the…
IC 59 and IC 63 in Cassiopeia
These bright rims and flowing shapes look ghostly on a cosmic scale. A telescopic view toward the constellation Cassiopeia , the colorful (zoomable) skyscape features the…
Barnard 150: Seahorse in Cepheus
Light-years across, this suggestive shape known as the Seahorse Nebula appears in silhouette against a rich, luminous background of stars. Seen toward the royal northern…
Light Pillars over Whitefish Bay
What's happening in the sky? Unusual lights appeared last week to hover above Whitefish Bay on the eastern edge of Lake Superior between the USA and Canada . Unsure of the cause,…
Viewing discoveries from 16 November 2018 through 24 October 2018.