Astronomy Picture of the Day · 2021
APOD 2021
364 entries from 2021: 328 images and 36 videos. 240 carry a copyright notice from the credited creator.
December 31, 2021 JWST on the Road to L2
Image Credit & Copyright: Malcolm Park ( North York Astronomical Association )
November 29, 2021 The Extraordinary Spiral in LL Pegasi
Image Credit: NASA , ESA , Hubble , HLA ; Processing & Copyright: Jonathan Lodge
October 31, 2021 Dark Matter in a Simulated Universe
Illustration Credit & Copyright: Tom Abel & Ralf Kaehler ( KIPAC , SLAC ), AMNH
September 30, 2021 The Hydrogen Clouds of M33
Image Credit & Copyright: Luca Fornaciari
August 31, 2021 A Blue Moon in Exaggerated Colors
Image Credit & Copyright: Robert Fedez
July 31, 2021 Remembering NEOWISE
Image Credit & Copyright: Petr Horalek / Institute of Physics in OpavaThumbnails are loaded from their original addresses. Images remain the property of the credited creators.
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December 2021 (31)
- Dec 31 JWST on the Road to L2 Copyrighted
- Dec 30 The Further Tail of Comet Leonard Copyrighted
- Dec 29 Giant Storms and High Clouds on Jupiter
- Dec 28 Sun Halo over Sweden Video Copyrighted
- Dec 27 Comet Leonard behind JWST Launch Plume Copyrighted
- Dec 26 James Webb Space Telescope over Earth
- Dec 25 The Tail of a Christmas Comet Copyrighted
- Dec 24 M1: The Crab Nebula Copyrighted
- Dec 23 Three Planets and a Comet Copyrighted
- Dec 22 Launch of the IXPE Observatory Copyrighted
- Dec 21 Solstice Sun and Milky Way Copyrighted
- Dec 20 The Comet and the Fireball Copyrighted
- Dec 19 Planetary Alignment over Italy Copyrighted
- Dec 18 Stephan's Quintet Copyrighted
- Dec 17 Geminid of the North Copyrighted
- Dec 16 Geminids of the South Copyrighted
- Dec 15 Comet Leonard from Space Copyrighted
- Dec 14 HH 666: Carina Dust Pillar with Jet Copyrighted
- Dec 13 Meteors and Auroras over Iceland Copyrighted
- Dec 12 Comet Leonard Before Star Cluster M3 Copyrighted
- Dec 11 Postcard from the South Pole Copyrighted
- Dec 10 Eclipse on a Polar Day Copyrighted
- Dec 9 A Total Eclipse of the Sun Copyrighted
- Dec 8 Comet Hale-Bopp Over Val Parola Pass Copyrighted
- Dec 7 Ninety Gravitational Wave Spectrograms and Counting
- Dec 6 Space Station Silhouette on the Moon Copyrighted
- Dec 5 Total Solar Eclipse Below the Bottom of the World Copyrighted
- Dec 4 Iridescent by Moonlight Copyrighted
- Dec 3 Comet Leonard and the Whale Galaxy Copyrighted
- Dec 2 NGC 6822: Barnard's Galaxy Copyrighted
- Dec 1 A Blue-Banded Blood Moon
November 2021 (30)
- Nov 30 In Motion: Uranus and Moons Video
- Nov 29 The Extraordinary Spiral in LL Pegasi Copyrighted
- Nov 28 A High Cliff on Comet Churyumov-Gerasimenko
- Nov 27 Messier 101
- Nov 26 Great Refractor and Lunar Eclipse Copyrighted
- Nov 25 At the Shadow's Edge Copyrighted
- Nov 24 Pleiades: The Seven Sisters Star Cluster Copyrighted
- Nov 23 The Sun in X-rays from NuSTAR
- Nov 22 Lunar Eclipse over a Skyscraper Copyrighted
- Nov 21 Introducing Comet Leonard Copyrighted
- Nov 20 An Almost Total Lunar Eclipse Copyrighted
- Nov 19 NGC 281: Starless with Stars Copyrighted
- Nov 18 Full Moonlight Copyrighted
- Nov 17 NGC 3314: When Galaxies Overlap Copyrighted
- Nov 16 Geminids from Gemini Copyrighted
- Nov 15 Light Pillar over Volcanic Etna Copyrighted
- Nov 14 How to Identify that Light in the Sky Copyrighted
- Nov 13 Rosetta's Comet in Gemini Copyrighted
- Nov 12 M33: The Triangulum Galaxy Copyrighted
- Nov 11 NGC 1333: Stellar Nursery in Perseus Copyrighted
- Nov 10 Video of a Green Flash Video Copyrighted
- Nov 9 All of These Space Images are Fake Except One
- Nov 8 A Filament Leaps from the Sun Video Copyrighted
- Nov 7 The Cat's Eye Nebula in Optical and X-ray Copyrighted
- Nov 6 The Galaxy Between Two Friends Copyrighted
- Nov 5 The Dark Seahorse in Cepheus Copyrighted
- Nov 4 NGC 147 and NGC 185 Copyrighted
- Nov 3 The Horsehead and Flame Nebulas Copyrighted
- Nov 2 SN Requiem: A Supernova Seen Three Times So Far
- Nov 1 A Waterfall and the Milky Way Copyrighted
October 2021 (31)
- Oct 31 Dark Matter in a Simulated Universe Copyrighted
- Oct 30 A Rorschach Aurora Copyrighted
- Oct 29 Haunting the Cepheus Flare Copyrighted
- Oct 28 Mirach's Ghost Copyrighted
- Oct 27 NGC 6995: The Bat Nebula Copyrighted
- Oct 26 Jupiter Rotates Video Copyrighted
- Oct 25 Road to the Galactic Center Copyrighted
- Oct 24 Halloween and the Ghost Head Nebula
- Oct 23 3D Bennu Copyrighted
- Oct 22 A Comet and a Crab Copyrighted
- Oct 21 SH2-308: The Dolphin-head Nebula Copyrighted
- Oct 20 Lucy Launches to Eight Asteroids Copyrighted
- Oct 19 Palomar 6: Globular Star Cluster
- Oct 18 Earthshine Moon over Sicily Copyrighted
- Oct 17 The Einstein Cross Gravitational Lens
- Oct 16 The Moona Lisa Copyrighted
- Oct 15 NGC 289: Swirl in the Southern Sky Copyrighted
- Oct 14 NGC 7293: The Helix Nebula Copyrighted
- Oct 13 NGC 7822: Cosmic Question Mark Copyrighted
- Oct 12 Fireball over Lake Louise Copyrighted
- Oct 11 Juno Flyby of Ganymede and Jupiter Video
- Oct 10 Full Moon Silhouettes Video Copyrighted
- Oct 9 50 Light-years to 51 Pegasi Copyrighted
- Oct 8 The Double Cluster in Perseus Copyrighted
- Oct 7 NGC 6559: East of the Lagoon Copyrighted
- Oct 6 M43: Streams of Orion Copyrighted
- Oct 5 Sunrise at the South Pole Copyrighted
- Oct 4 NGC 4676: When Mice Collide Copyrighted
- Oct 3 The Holographic Principle and a Teapot
- Oct 2 A Light and Dusty Night Copyrighted
- Oct 1 The Central Milky Way from Lagoon to Pipe Copyrighted
September 2021 (30)
- Sep 30 The Hydrogen Clouds of M33 Copyrighted
- Sep 29 Gigantic Jet Lightning from Puerto Rico Video Copyrighted
- Sep 28 Night of the Perseids Video Copyrighted
- Sep 27 Unwrapped: Five Decade Old Lunar Selfie
- Sep 26 The Red Square Nebula Copyrighted
- Sep 25 The Bubble and the Star Cluster Copyrighted
- Sep 24 Perseid Outburst at Westmeath Lookout Copyrighted
- Sep 23 Harvest Moon Trail Copyrighted
- Sep 22 Equinox on a Spinning Earth Video
- Sep 21 Sun Spot Hill Copyrighted
- Sep 20 Lynds Dark Nebula 1251 Copyrighted
- Sep 19 Rings and Seasons of Saturn Copyrighted
- Sep 18 Rubin's Galaxy
- Sep 17 Video: Flash on Jupiter Video Copyrighted
- Sep 16 North America and the Pelican Copyrighted
- Sep 15 Cyclone Paths on Planet Earth
- Sep 14 Mars Panorama 360 from Curiosity
- Sep 13 Night Sky Reflected Copyrighted
- Sep 12 A Spiral Aurora over Iceland Copyrighted
- Sep 11 Saturn at Night
- Sep 10 Rosetta's Comet in View Copyrighted
- Sep 9 M16 Close Up Copyrighted
- Sep 8 The Deep Sky Toward Andromeda
- Sep 7 NGC 520: Colliding Galaxies from Hubble Copyrighted
- Sep 6 Firefly Milky Way over Russia Copyrighted
- Sep 5 Earth and Moon Video
- Sep 4 A Falcon 9 Nebula Copyrighted
- Sep 3 NGC 7023: The Iris Nebula Copyrighted
- Sep 2 M51: The Whirlpool Galaxy Copyrighted
- Sep 1 Dancing Ghosts: Curved Jets from Active Galaxies
August 2021 (31)
- Aug 31 A Blue Moon in Exaggerated Colors Copyrighted
- Aug 30 A Fire Rainbow over West Virginia
- Aug 29 Orbits of Potentially Hazardous Asteroids
- Aug 28 Mars Rock Rochette
- Aug 27 Elephant's Trunk and Caravan Copyrighted
- Aug 26 A Blue Hour Full Moon Copyrighted
- Aug 25 Solar System Ball Drop Video Copyrighted
- Aug 24 PDS 70: Disk, Planets, and Moons
- Aug 23 Abell 3827: Cannibal Cluster Gravitational Lens
- Aug 22 Explosions from White Dwarf Star RS Oph Copyrighted
- Aug 21 Triple Transit and Mutual Events Copyrighted
- Aug 20 Three Perseid Nights Copyrighted
- Aug 19 Bright Meteor, Starry Sky Copyrighted
- Aug 18 Rings Around the Ring Nebula Copyrighted
- Aug 17 M57: The Ring Nebula from Hubble
- Aug 16 Perseid Meteor, Red Sprites, and Nova RS Ophiuchus Copyrighted
- Aug 15 Perseid Rain Copyrighted
- Aug 14 Island Universe, Cosmic Sand Copyrighted
- Aug 13 A Perfect Spiral
- Aug 12 A Beautiful Trifid Copyrighted
- Aug 11 Mammatus Clouds over Saskatchewan Copyrighted
- Aug 10 Fire in Space
- Aug 9 Perseus and the Lost Meteors Copyrighted
- Aug 8 A Perseid Below
- Aug 7 Jezero Crater: Raised Ridges in 3D
- Aug 6 Stars and Dust Across Corona Australis Copyrighted
- Aug 5 Tycho and Clavius Copyrighted
- Aug 4 EHT Resolves Central Jet from Black Hole in Cen A
- Aug 3 A Perseid Fireball and the Milky Way Copyrighted
- Aug 2 The Hubble Ultra Deep Field in Light and Sound Video
- Aug 1 Pluto in Enhanced Color
July 2021 (30)
- Jul 31 Remembering NEOWISE Copyrighted
- Jul 30 Mimas in Saturnlight
- Jul 29 The Tulip and Cygnus X-1 Copyrighted
- Jul 28 Ring Galaxy AM 0644-741
- Jul 27 Fleming's Triangular Wisp Copyrighted
- Jul 26 CG4: A Ruptured Cometary Globule Copyrighted
- Jul 25 Crescent Neptune and Triton
- Jul 24 The Edge of Space Copyrighted
- Jul 23 Elephant, Bat, and Squid Copyrighted
- Jul 22 NGC 7814: Little Sombrero with Supernova Copyrighted
- Jul 21 Colors: Ring Nebula versus Stars
- Jul 20 Thor's Helmet Copyrighted
- Jul 19 Framed by Trees: A Window to the Galaxy Copyrighted
- Jul 18 The Andromeda Galaxy in Ultraviolet
- Jul 17 Alphonsus and Arzachel Copyrighted
- Jul 16 Love and War by Moonlight Copyrighted
- Jul 15 The Dark Tower in Scorpius Copyrighted
- Jul 14 GW200115: Simulation of a Black Hole Merging with a Neutron Star Video
- Jul 13 Saturn's Iapetus: Painted Moon in 3D Video
- Jul 12 M27: The Dumbbell Nebula Copyrighted
- Jul 11 Find the Moon Copyrighted
- Jul 10 Mercury and the Da Vinci Glow Copyrighted
- Jul 9 M82: Starburst Galaxy with a Superwind Copyrighted
- Jul 8 Perihelion to Aphelion Copyrighted
- Jul 6 Saturn and Six Moons Copyrighted
- Jul 5 IC 4592: The Blue Horsehead Reflection Nebula Copyrighted
- Jul 4 The Face on Mars
- Jul 3 Along the Milky Way Copyrighted
- Jul 2 AR2835: Islands in the Photosphere Copyrighted
- Jul 1 Perseverance Selfie with Ingenuity
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June 2021 (30)
- Jun 30 Simulation: Formation of the First Stars Video
- Jun 29 Orion Nebula: The Hubble View
- Jun 28 A Paper Moon Solar Eclipse Copyrighted
- Jun 27 The Dancing Auroras of Saturn
- Jun 26 Pixels in the Sun Copyrighted
- Jun 25 Andromeda in a Single Shot Copyrighted
- Jun 24 Messier 99 Copyrighted
- Jun 23 STARFORGE: A Star Formation Simulation Video
- Jun 22 HD 163296: Jet from a Star in Formation
- Jun 21 The Tadpole Galaxy from Hubble
- Jun 20 Sunrise Solstice over Stonehenge Copyrighted
- Jun 19 Northern Summer Twilight Copyrighted
- Jun 18 Devil Horns from a Ring of Fire Copyrighted
- Jun 17 NGC 6888: The Crescent Nebula Copyrighted
- Jun 16 Scorpius Enhanced Copyrighted
- Jun 15 Zhurong: New Rover on Mars
- Jun 14 Ganymede from Juno
- Jun 13 A Supercell Thunderstorm Over Texas Video Copyrighted
- Jun 12 Eclipse on the Water Copyrighted
- Jun 11 Eclipse Flyby Copyrighted
- Jun 10 Circular Sun Halo Copyrighted
- Jun 9 A Total Lunar Eclipse Corona Copyrighted
- Jun 8 A Face in the Clouds of Jupiter from Juno
- Jun 7 A Bright Nova in Cassiopeia Copyrighted
- Jun 6 A Distorted Sunrise Eclipse Copyrighted
- Jun 5 The Shining Clouds of Mars
- Jun 4 Blood Monster Moon Copyrighted
- Jun 3 Millions of Stars in Omega Centauri Copyrighted
- Jun 2 The Galactic Center in Stars, Gas, and Magnetism
- Jun 1 Satellites over Orion
May 2021 (31)
- May 31 Mimas: Small Moon with a Big Crater Copyrighted
- May 30 Aurora over Clouds Copyrighted
- May 29 Lunar Dust and Duct Tape
- May 28 Total Lunar Eclipse from Sydney Copyrighted
- May 27 Mid-Eclipse and Milky Way Copyrighted
- May 26 The Outburst Clouds of Star AG Car
- May 25 The Moon During a Total Lunar Eclipse Video
- May 24 Lightning Eclipse from the Planet of the Goats Copyrighted
- May 23 The Galaxy Tree Copyrighted
- May 22 Markarian's Chain Copyrighted
- May 21 Utopia on Mars
- May 20 M13: The Great Globular Cluster in Hercules Copyrighted
- May 19 The Jellyfish and Mars Copyrighted
- May 18 Jets from the Necklace Nebula
- May 17 NGC 4565: Galaxy on Edge Copyrighted
- May 16 NGC 602 and Beyond
- May 15 The Southern Cliff in the Lagoon
- May 14 M104: The Sombrero Galaxy Copyrighted
- May 13 The Comet, the Whale, and the Hockey Stick Copyrighted
- May 12 A Meteor and the Gegenschein
- May 11 Lightning and Orion Beyond Uluru Copyrighted
- May 10 Star Clusters M35 and NGC 2158 Copyrighted
- May 9 Horsehead and Orion Nebulas Copyrighted
- May 8 Deepscape at Yacoraite Copyrighted
- May 7 Mercury-Redstone 3 Launch
- May 6 Windblown NGC 3199 Copyrighted
- May 5 STEVE over Copper Harbor Copyrighted
- May 4 Space Station, Solar Prominences, Sun Copyrighted
- May 3 Apollo 11: Earth, Moon, Spaceship
- May 2 Clouds of the Carina Nebula Copyrighted
- May 1 Perseverance from Ingenuity
April 2021 (30)
- Apr 30 Pink and the Perigee Moon Copyrighted
- Apr 29 Apollo 17: The Crescent Earth
- Apr 28 North Star: Polaris and Surrounding Dust Copyrighted
- Apr 27 Animation: Black Hole Destroys Star Video
- Apr 26 A Sagittarius Triplet Copyrighted
- Apr 25 Planetary Nebula Mz3: The Ant Nebula
- Apr 24 Streak and Plume from SpaceX Crew-2 Launch Video Copyrighted
- Apr 23 Flying Over the Earth at Night II Video
- Apr 22 Planet Earth at Twilight
- Apr 21 Centaurus A's Warped Magnetic Fields
- Apr 20 Ingenuity: First Flight over Mars Video
- Apr 19 The Galactic Center in Infrared
- Apr 18 Rainbow Airglow over the Azores Copyrighted
- Apr 17 Inside the Flame Nebula
- Apr 16 The Doubly Warped World of Binary Black Holes Video
- Apr 15 The Galaxy, the Jet, and a Famous Black Hole
- Apr 14 The Pencil Nebula Supernova Shock Wave Copyrighted
- Apr 13 Confirmed Muon Wobble Remains Unexplained
- Apr 12 Alnitak and the Flame Nebula Copyrighted
- Apr 11 When Black Holes Collide Video Copyrighted
- Apr 10 Zodiacal Night Copyrighted
- Apr 9 Messier 106 Copyrighted
- Apr 8 3D Ingenuity
- Apr 7 Threads of NGC 1947
- Apr 6 Mars and the Pleiades Beyond Vinegar Hill Copyrighted
- Apr 5 Veil Nebula: Wisps of an Exploded Star
- Apr 4 In, Through, and Beyond Saturn's Rings
- Apr 3 Ingenuity on Sol 39
- Apr 2 NGC 3521: Galaxy in a Bubble Copyrighted
- Apr 1 Rocket Launch as Seen from the Space Station Video
March 2021 (31)
- Mar 31 M87's Central Black Hole in Polarized Light
- Mar 30 Red Sprite Lightning over the Andes Copyrighted
- Mar 29 M64: The Evil Eye Galaxy
- Mar 28 SuitSat-1: A Spacesuit Floats Free
- Mar 27 Exploring the Antennae Copyrighted
- Mar 26 The Medusa Nebula Copyrighted
- Mar 25 Curiosity: Sol 3048
- Mar 24 Aurorae and Lightning on Jupiter
- Mar 23 Mars over Duddo Stone Circle Copyrighted
- Mar 22 From Auriga to Orion Copyrighted
- Mar 21 The Antikythera Mechanism
- Mar 20 The Leo Trio Copyrighted
- Mar 19 Central Lagoon in Infrared
- Mar 18 Stardust in the Perseus Molecular Cloud Copyrighted
- Mar 17 The Surface of Venus from Venera 14 Copyrighted
- Mar 16 IC 1318: The Butterfly Nebula in Gas and Dust Copyrighted
- Mar 15 Meteor Fireballs in Light and Sound Video Copyrighted
- Mar 14 A Flag Shaped Aurora over Sweden Copyrighted
- Mar 13 SuperCam Target on Ma'az
- Mar 12 Messier 81 Copyrighted
- Mar 11 Zodiacal Light and Mars Copyrighted
- Mar 10 NGC 1499: The California Nebula Copyrighted
- Mar 9 Perseverance 360: Unusual Rocks and the Search for Life on Mars Video
- Mar 8 Three Tails of Comet NEOWISE Copyrighted
- Mar 7 Pillars of the Eagle Nebula in Infrared
- Mar 6 Perseverance Takes a Spin
- Mar 5 A Little Like Mars Copyrighted
- Mar 4 Mars in Taurus Copyrighted
- Mar 3 Stars over an Erupting Volcano Copyrighted
- Mar 2 Ingenuity: A Mini-Helicopter Now on Mars
- Mar 1 The Pelican Nebula in Red and Blue Copyrighted
February 2021 (28)
- Feb 28 The Aurora Tree Copyrighted
- Feb 27 Perseverance Landing Site from Mars Reconnaissance Orbiter
- Feb 26 Mars Perseverance Sol 3
- Feb 25 A Venus Flyby
- Feb 24 Spiral Galaxy M66 from Hubble Copyrighted
- Feb 23 Video: Perseverance Landing on Mars Video
- Feb 22 Moon Rising Between Starships Copyrighted
- Feb 21 NGC 2244: A Star Cluster in the Rosette Nebula Copyrighted
- Feb 20 Perseverance: How to Land on Mars
- Feb 19 Mars Perseverance Sol 0
- Feb 18 Swiss Alps, Martian Sky Copyrighted
- Feb 17 Sun Pillar with Upper Tangent Arc Copyrighted
- Feb 16 Perseverance: Seven Minutes to Mars Video
- Feb 15 Landing on Mars: Seven Minutes of Terror Video
- Feb 14 Long Stem Rosette Nebula Copyrighted
- Feb 13 Stereo Eros
- Feb 12 Spiral Galaxy NGC 1350 Copyrighted
- Feb 11 Cygnus Mosaic 2010 – 2020 Copyrighted
- Feb 10 Firing Lasers to Tame the Sky Copyrighted
- Feb 9 Flashes of the Crab Pulsar Video Copyrighted
- Feb 8 WR23 and Interstellar Clouds in Carina Copyrighted
- Feb 7 Blue Straggler Stars in Globular Cluster M53
- Feb 6 A Northern Winter Night Copyrighted
- Feb 5 Apollo 14 Heads for Home
- Feb 4 Apollo 14: A View from Antares
- Feb 3 Found on the Moon: Candidate for Oldest Known Earth Rock Video
- Feb 2 A Colorful Quadrantid Meteor Copyrighted
- Feb 1 Lunar Halo over Snowy Trees Copyrighted
January 2021 (31)
- Jan 31 Asteroids in the Distance
- Jan 30 Southern Sky from 38,000 Feet Copyrighted
- Jan 29 North American Nightscape Copyrighted
- Jan 28 Messier 66 Close Up Copyrighted
- Jan 27 The Vertical Magnetic Field of NGC 5775
- Jan 26 Central NGC 1316: After Galaxies Collide Copyrighted
- Jan 25 Southern Cross over Chilean Volcano Copyrighted
- Jan 24 Massive Nearby Spiral Galaxy NGC 2841 Copyrighted
- Jan 23 Recycling Cassiopeia A
- Jan 22 The Milky Ring Copyrighted
- Jan 21 M78 Wide Field Copyrighted
- Jan 20 The Magnetic Field of the Whirlpool Galaxy
- Jan 19 A Lunar Corona with Jupiter and Saturn Copyrighted
- Jan 18 The Medulla Nebula Supernova Remnant Copyrighted
- Jan 17 Jets from Unusual Galaxy Centaurus A
- Jan 16 The Mountains of NGC 2174
- Jan 15 A Plutonian Landscape
- Jan 14 Aurora Slathers Up the Sky
- Jan 13 Arches Across an Arctic Sky Copyrighted
- Jan 12 A Historic Brazilian Constellation Copyrighted
- Jan 11 Moon Phases in 2021 Video
- Jan 10 Star Cluster R136 Breaks Out
- Jan 9 Titan: Moon over Saturn
- Jan 8 NGC 1365: Majestic Island Universe Copyrighted
- Jan 7 Total Solar Eclipse 2020 Copyrighted
- Jan 6 Striped Sand Dunes on Mars
- Jan 5 The Small Cloud of Magellan Copyrighted
- Jan 4 Sprite Lightning at 100,000 Frames Per Second Video Copyrighted
- Jan 3 A Phoenix Aurora over Iceland Copyrighted
- Jan 2 21st Century Wet Collodion Moon Copyrighted
- Jan 1 Galaxies and the South Celestial Pole Copyrighted
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Source
- Astronomy Picture of the Day — NASA Science, science.nasa.gov/apod/archive
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