Astronomy Picture of the Day · 1999
APOD 1999
365 entries from 1999: 365 images and 0 videos. 82 carry a copyright notice from the credited creator.
December 31, 1999 The Millennium that Defined Earth
Credit: Apollo 8 Crew, NASA
November 30, 1999 Henize 70: A SuperBubble In The LMC
Credit: FORS Team, 8.2-meter VLT, ESO
October 31, 1999 The Cat's Eye Nebula
Credit: J.P. Harrington and K.J. Borkowski (U. Maryland), HST, NASA
September 30, 1999 Massive Stars Of 30 Doradus
Credit: John Trauger (JPL), James Westphal (Caltech), Nolan Walborn (STScI), Rodolfo Barba’ (La Plata Observatory), NASA
August 31, 1999 Symbiotic Star Bubbles
Credit: R. Corradi (Instituto de Astrofisica de Canarias) et al., NASA
July 31, 1999 X-Ray Triple Jet
Credit: ISAS, Yohkoh Project, SXT GroupThumbnails are loaded from their original addresses. Images remain the property of the credited creators.
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December 1999 (31)
- Dec 31 The Millennium that Defined Earth
- Dec 30 The Century that Defined Galaxy
- Dec 29 The Decade that Defined Star System Copyrighted
- Dec 28 A Year Of New Perspectives
- Dec 27 Solar Moss
- Dec 26 West Of The Great Red Spot
- Dec 25 An Earth Ornament
- Dec 24 Hubble Holiday
- Dec 23 Unusual Aurora During Solar Wind Dropout
- Dec 22 Perigee Moon, Apogee Moon
- Dec 21 XMM Launched
- Dec 20 Lava Fountain on Jupiter's Io
- Dec 19 Accretion Disk Binary System
- Dec 18 Irregular Galaxy Sextans A
- Dec 17 Hot Gas In Hydra A
- Dec 16 Supernova Remnant In M82
- Dec 15 A Nova In Aquila Copyrighted
- Dec 14 High Velocity Clouds and the Milky Way
- Dec 13 A Magellanic Starfield
- Dec 12 NGC 4314: A Nuclear Starburst Ring
- Dec 11 A Close Encounter Of The Stellar Kind
- Dec 10 Spot The Planet Copyrighted
- Dec 9 X-ray Hot Supernova Remnant in the SMC
- Dec 8 Moon Struck
- Dec 7 The Cat's Paw Nebula Copyrighted
- Dec 6 M83: The Southern Pinwheel Galaxy from VLT
- Dec 5 Rhea: Saturn's Second Largest Moon Copyrighted
- Dec 4 Mars Polar Lander Target Ellipse
- Dec 3 Southern Mars
- Dec 2 1999 Leonid Fireball Copyrighted
- Dec 1 Landing At The Martian South Pole
November 1999 (30)
- Nov 30 Henize 70: A SuperBubble In The LMC
- Nov 29 Arcs and Jets in Herbig-Haro 34
- Nov 28 Beneath Venus' Clouds
- Nov 27 Runaway Star
- Nov 26 Io Volcano: Pele's Hot Lava
- Nov 25 3C 295: X-rays From A Giant Galaxy
- Nov 24 A Leonids Meteor Storm in 1999 Copyrighted
- Nov 23 Leonids Above Torre de la Guaita Copyrighted
- Nov 22 The Crab Nebula from VLT
- Nov 21 Elliptical Galaxy NGC 4881 in Coma
- Nov 20 Small Star
- Nov 19 Mercury And The Sun
- Nov 18 A Sirius Leonid Meteor Copyrighted
- Nov 17 A Leonid Meteor Explodes
- Nov 16 A RADARSAT Map of Antarctica
- Nov 15 In the Shade of a Historic Planet Copyrighted
- Nov 14 M31: The Andromeda Galaxy Copyrighted
- Nov 13 Tempel-Tuttle: The Leonid Comet Copyrighted
- Nov 12 1998 Leonid Fireball Copyrighted
- Nov 11 Mercury And The Moon Copyrighted
- Nov 10 The Belt of Venus
- Nov 9 Spiral Galaxies in Collision
- Nov 8 Lunation
- Nov 7 The Heart Of NGC 4261
- Nov 6 X-ray Transit of Mercury
- Nov 5 The Shadow Of Phobos
- Nov 4 Gamma-Ray Bursting
- Nov 3 M32: Blue Stars in an Elliptical Galaxy
- Nov 2 Aurora Through a Moonlit Sky Copyrighted
- Nov 1 The Rotten Egg Planetary Nebula
October 1999 (31)
- Oct 31 The Cat's Eye Nebula
- Oct 30 Mars Rocks, Sojourner Rolls
- Oct 29 The USNO Millennium Time Ball
- Oct 28 X-Ray Jet From Centaurus A
- Oct 27 In the Heart of the Tarantula Nebula Copyrighted
- Oct 26 30 Doradus: The Tarantula Nebula Copyrighted
- Oct 25 Neptune in Infrared Copyrighted
- Oct 24 The Magnetic Carpet Of The Sun
- Oct 23 M27: Not A Comet
- Oct 22 Iridium 52: Not A Meteor
- Oct 21 Follow The Spots
- Oct 20 NGC 2261: Hubble's Variable Nebula
- Oct 19 Earth's North Magnetic Pole
- Oct 18 NGC 3603: An Active Star Cluster
- Oct 17 Black Holes in Galactic Centers
- Oct 16 Maria Mitchell Inspires a Generation Copyrighted
- Oct 15 Moon Crashers
- Oct 14 Moon Over Eugenia
- Oct 13 Ozone Hole Reduced
- Oct 12 NGC 2346: A Butterfly-Shaped Planetary Nebula
- Oct 11 Eta Carinae in X-Rays
- Oct 10 Triton: Neptune's Largest Moon
- Oct 9 The Frothy Milky Way
- Oct 8 NGC 1365: Barred Spiral Galaxy
- Oct 7 The Averted Side Of The Moon
- Oct 6 Polaris: The North Star Copyrighted
- Oct 5 Two Hours Before Neptune
- Oct 4 The 220 Mirrors of CRTF
- Oct 3 Nearby Dwarf Galaxy Leo I Copyrighted
- Oct 2 Phi Persei: Double Star
- Oct 1 New Stars In 30 Doradus
September 1999 (30)
- Sep 30 Massive Stars Of 30 Doradus
- Sep 29 The Crab Nebula in X-Rays
- Sep 28 Mystery Object Explained
- Sep 27 Our Galaxy in Stars, Gas, and Dust Copyrighted
- Sep 26 M83: A Barred Spiral Galaxy
- Sep 25 Twistin' By The Lagoon
- Sep 24 Cometary Globules In Orion
- Sep 23 Equinox and Eruptive Prominence
- Sep 22 Halos Around the Ring Nebula
- Sep 21 The Quintuplet Star Cluster
- Sep 20 Io in True Color
- Sep 19 Interstellar Dust-Bunnies of NGC 891 Copyrighted
- Sep 18 Mercury Astronauts and a Redstone
- Sep 17 M3: Half A Million Stars
- Sep 16 The Incredible Expanding Cat's Eye
- Sep 15 The Big Corona Copyrighted
- Sep 14 The Colorful Orion Nebula Copyrighted
- Sep 13 Supernova Remnant N132D in X-Rays
- Sep 12 Stonehenge: Ancient Monument to the Sun Copyrighted
- Sep 11 The Annotated Galactic Center
- Sep 10 Cassini Images The Moon
- Sep 9 Comet Hale-Bopp Over the Superstition Mountains Copyrighted
- Sep 8 A Superior Conjunction Of Mercury
- Sep 7 Water Found in Space Rock
- Sep 6 HCG 87: A Small Group of Galaxies
- Sep 5 The Universe Evolves
- Sep 4 The Water Vapor Channel
- Sep 3 Venus Falls Out of the Evening Sky Copyrighted
- Sep 2 Eclipse Over The Mountain Copyrighted
- Sep 1 1999 JM8: A Rock Too Close
August 1999 (31)
- Aug 31 Symbiotic Star Bubbles
- Aug 30 Looking Back on an Eclipsed Earth Copyrighted
- Aug 29 The Witch Head Nebula
- Aug 28 X-Ray Pleiades
- Aug 27 Chandra's First Light: Cassiopeia A
- Aug 26 Cassini Flyby Copyrighted
- Aug 25 Reflections on NGC 6188 Copyrighted
- Aug 24 A Network of Microlensing Caustics Copyrighted
- Aug 23 Sundogs over the VLA Copyrighted
- Aug 22 The Center of Centaurus A
- Aug 21 Galaxies Away
- Aug 20 At The Sun's Edge Copyrighted
- Aug 19 Light From The Dark Sun Copyrighted
- Aug 18 Sun Block Copyrighted
- Aug 17 A Crescent Sunrise Copyrighted
- Aug 16 Mars Weather Watch
- Aug 15 M104: The Sombrero Galaxy
- Aug 14 A String Of Pearls
- Aug 13 Eclipse In The Shade Copyrighted
- Aug 12 Deploying Spartan
- Aug 11 A Meteor Over the Anza-Borrego Desert Copyrighted
- Aug 10 A Total Eclipse for Europe
- Aug 9 A Martian Dust Storm Approaches
- Aug 8 Comet Hale-Bopp Over Val Parola Pass
- Aug 7 Ida and Dactyl: Asteroid and Moon
- Aug 6 Hubble Tracks Jupiter's Great Red Spot
- Aug 5 Asteroid 9969 Braille
- Aug 4 The Surface of Titan
- Aug 3 The Vela Supernova Remnant Expands Copyrighted
- Aug 2 Regulus Occulted Copyrighted
- Aug 1 Walking in Space
July 1999 (31)
- Jul 31 X-Ray Triple Jet
- Jul 30 The Sea of Tranquillity: 5 Seconds To Impact
- Jul 29 Hydrogen Blob N88A in the Small Magellanic Cloud
- Jul 28 Asia at Night Copyrighted
- Jul 27 Chandra X-ray Telescope
- Jul 26 Noctilucent Clouds Copyrighted
- Jul 25 The Cygnus Loop
- Jul 24 Infrared Saturn
- Jul 23 A Martian Valley
- Jul 22 Cosmic Collisions in a Galaxy Cluster
- Jul 21 Galactic Supernova Remnant IC 443
- Jul 20 Moon Rocket
- Jul 19 NGC 3372: The Great Nebula in Carina
- Jul 18 Jupiter from Voyager
- Jul 17 Rockets and Robert Goddard
- Jul 16 Solar Surfin' Copyrighted
- Jul 15 Charles P. Conrad, Jr. 1930-1999
- Jul 14 Moon, Planets, and Rocket Trails Copyrighted
- Jul 13 The Flame Nebula in Infrared
- Jul 12 A Delta Rocket Launches
- Jul 11 Barringer Crater on Earth
- Jul 10 Southern Neptune
- Jul 9 NGC 7789: Galactic Star Cluster
- Jul 8 Eruptive Prominence
- Jul 7 M80: A Dense Globular Cluster
- Jul 6 A Sun Pillar
- Jul 5 Four Faces of Mars
- Jul 4 A Landing On Mars
- Jul 3 NGC 2440: Cocoon of a New White Dwarf
- Jul 2 Shadow Of A Comet
- Jul 1 Apollo 17's Lunar Rover
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June 1999 (30)
- Jun 30 NGC 6934 from Gemini North
- Jun 29 Gemini North Telescope Inaugurated
- Jun 28 From Mars with Love
- Jun 27 COBE Dipole: Speeding Through the Universe
- Jun 26 Shells in the Egg Nebula
- Jun 25 The Gegenschein
- Jun 24 NGC 1365: A Nearby Barred Spiral Galaxy
- Jun 23 The Sudbury Neutrino Detector
- Jun 22 PKS285-02: A Young Planetary Nebula
- Jun 21 The Galactic Center in Infrared
- Jun 20 A Very Large Array of Radio Telescopes
- Jun 19 Venus on the Horizon
- Jun 18 Tharsis Volcanos
- Jun 17 NGC 4565: Needle Galaxy Copyrighted
- Jun 16 Sprite Fireworks
- Jun 15 The Sun Oscillates
- Jun 14 N159 and the Papillon Nebula
- Jun 13 Zodiacal Light Copyrighted
- Jun 12 Venus: Just Passing By
- Jun 11 AB Aurigae: How To Make Planets
- Jun 10 Mjølnir: Impact Crater
- Jun 9 NGC 4414: A Telling Spiral
- Jun 8 Trifid Pillars & Jets
- Jun 7 Starbirth in the Trifid Nebula
- Jun 6 Kepler Discovers How Planets Move
- Jun 5 Betelgeuse, Betelgeuse, Betelgeuse
- Jun 4 NGC 3603: From Beginning To End
- Jun 3 Methane Dwarf
- Jun 2 Thermal Mars
- Jun 1 A Gallery of Gravitational Mirages
May 1999 (31)
- May 31 Uranus' Moon 18
- May 30 Tycho Brahe Measures the Sky
- May 29 The Ecliptic Plane
- May 28 Topographical Mars
- May 27 NGC 4603 and the Expanding Universe
- May 26 GRB 990510: Another Unusual Gamma Ray Burst
- May 25 NGC 6872: A Stretched Spiral
- May 24 Introducing Nova Velorum 1999 Copyrighted
- May 23 The Keyhole Nebula Copyrighted
- May 22 M42: A Mosaic of Orion's Great Nebula
- May 21 Star Party Trails Copyrighted
- May 20 Cyclone on Mars
- May 19 The Horsehead Nebula Copyrighted
- May 18 A Laguna Triangle Copyrighted
- May 17 How to Search for Aliens
- May 16 Europe at Night Copyrighted
- May 15 Star Wars in NGC 664
- May 14 Landsat 7 Views Planet Earth
- May 13 Mars Volcano Apollinaris Patera
- May 12 Warped Spiral Galaxy ESO510-13
- May 11 Molecular Cloud Barnard 68
- May 10 Polar Ring Galaxy NGC 4650A
- May 9 Fractal Interstellar Dust Up-Close Copyrighted
- May 8 Moon Occults Saturn Copyrighted
- May 7 Hot Stars in the Southern Milky Way
- May 6 Liberty Bell 7
- May 5 A Solar System Portrait
- May 4 Magnetic Mars
- May 3 Loop I in the Northern Sky
- May 2 Stars from Eagle's Eggs
- May 1 Lunar Dust and Duct Tape
April 1999 (30)
- Apr 30 Solar Shock Wave
- Apr 29 NGC 2266: Old Cluster in the New General Catalog Copyrighted
- Apr 28 A Sundial for Mars
- Apr 27 Introducing Comet Lee Copyrighted
- Apr 26 USNO-A2.0 Catalog: A Digital Sky
- Apr 25 Mimas: Small Moon with a Big Crater
- Apr 24 Barsoom
- Apr 23 Io Shadow
- Apr 22 Where is Upsilon Andromedae? Copyrighted
- Apr 21 The Nearest Stars
- Apr 20 Candidates for a Hypernova
- Apr 19 The Full Moon
- Apr 18 Moon Over California Copyrighted
- Apr 17 Gamma Ray Moon
- Apr 16 Upsilon Andromedae: An Extra-Solar System Copyrighted
- Apr 15 Apollo 17's Moonship
- Apr 14 The Backyard Universe Copyrighted
- Apr 13 The Case of the Missing Supernova
- Apr 12 Nearby Spiral Galaxy NGC 4945
- Apr 11 Liftoff of Space Shuttle Columbia
- Apr 10 Canaries Sky Copyrighted
- Apr 9 WR 104: Pinwheel Star
- Apr 8 Apollo 12: Surveyor 3 and Intrepid
- Apr 7 Denizen of the Tarantula Nebula
- Apr 6 NGC 6334: The Bear Claw Nebula
- Apr 5 The Launch of STARDUST
- Apr 4 Hot Gas and Dark Matter
- Apr 3 The Radio Sky: Tuned to 408MHz
- Apr 2 Stars of NGC 206
- Apr 1 Ski Mars!
March 1999 (31)
- Mar 31 PG 1115+080: A Gravitational Cloverleaf
- Mar 30 An Anomalous SETI Signal Copyrighted
- Mar 29 NGC 1850: Gas Clouds and Star Clusters
- Mar 28 The Coma Cluster of Galaxies
- Mar 27 Stars Without Galaxies
- Mar 26 Impact Moon
- Mar 25 March of the Planets Copyrighted
- Mar 24 Brown Dwarf Gliese 229B
- Mar 23 A Chamaeleon Sky
- Mar 22 An Infrared Galaxy Gallery
- Mar 21 M2-9: Wings of a Butterfly Nebula
- Mar 20 Aurora and Orion
- Mar 19 Mapping Mars
- Mar 18 Messier Marathon Copyrighted
- Mar 17 Ice Fishing for Cosmic Neutrinos Copyrighted
- Mar 16 Sigmoids Predict Solar Eruptions
- Mar 15 Happy Face Crater on Mars
- Mar 14 The Comet and the Galaxy Copyrighted
- Mar 13 Phobos Over Mars
- Mar 12 Hydrogen, Helium, and the Stars of M10 Copyrighted
- Mar 11 5 Million Miles From Io
- Mar 10 NGC 2997 from VLT Copyrighted
- Mar 9 The VLT Interferometric Array Copyrighted
- Mar 8 A Jupiter-Venus Conjunction Copyrighted
- Mar 7 Tycho's Supernova Remnant in X-ray
- Mar 6 Miranda, Chevron, and Alonso
- Mar 5 M46 And NGC 2438: Young And Old Copyrighted
- Mar 4 Ganymede Mosaic
- Mar 3 Infrared Mars
- Mar 2 The Kleinmann-Low Nebula
- Mar 1 Reflection Nebula NGC 1435 Copyrighted
February 1999 (28)
- Feb 28 Trapezium: Teardrops in My Skies
- Feb 27 Hamlet of Oberon
- Feb 26 Dark Cloud
- Feb 25 NGC 6712: Galactic Globular Cluster
- Feb 24 A Milky-Way Band Copyrighted
- Feb 23 Construction of International Space Station Begins
- Feb 22 NGC 1316: After Galaxies Collide
- Feb 21 In the Center of 30 Doradus
- Feb 20 Astro 1 In Orbit
- Feb 19 On The Trail Of A Fireball
- Feb 18 Aerogel For STARDUST
- Feb 17 Hickson Compact Group 40
- Feb 16 The Large and Small of M87
- Feb 15 La Niña Earth
- Feb 14 Dark Sky, Bright Sun
- Feb 13 Pluto: The Frozen Planet
- Feb 12 Lunar Close-Up
- Feb 11 A Disk and Jet in Haro 6-5B
- Feb 10 GRB 990123 Host Galaxy Imaged
- Feb 9 A Supernova Star-Field
- Feb 8 The Solar Wind Emerges
- Feb 7 Titan: Saturn's Smog Moon
- Feb 6 The First Explorer
- Feb 5 HR 4796A: Not Saturn
- Feb 4 Spiral Sunspot Copyrighted
- Feb 3 A Galactic Mushroom Cloud Copyrighted
- Feb 2 The Orion Nebula from Subaru
- Feb 1 The Subaru Telescope
January 1999 (31)
- Jan 31 Welcome to the Planet Earth
- Jan 30 Stereo Saturn
- Jan 29 The Moon In January
- Jan 28 The Galactic Center – A Radio Mystery
- Jan 27 Hypatia of Alexandria
- Jan 26 M17: The Omega Nebula Copyrighted
- Jan 25 Galaxy And Gamma-ray Burst
- Jan 24 A Venus Landing
- Jan 23 Saturnian Aurora
- Jan 22 Pegasus dSph: Little Galaxy of the Local Group
- Jan 21 Spiral Galaxy NGC 253
- Jan 20 Possible Planets And Infrared Dust
- Jan 19 Telescope with Lightning Copyrighted
- Jan 18 Kitt Peak National Observatory Copyrighted
- Jan 17 NGC 1818: A Young Globular Cluster
- Jan 16 Spiral Eddies On Planet Earth
- Jan 15 Reflections Of Orion Copyrighted
- Jan 14 Crosby Ramsey Memorial Observatory Refractor
- Jan 13 Sagittarius Star Cloud
- Jan 12 The Wind on Mars
- Jan 11 Perihelion Sun
- Jan 10 Venus' Once Molten Surface
- Jan 9 Lunokhod: Moon Robot
- Jan 8 Invader From Earth
- Jan 7 The Ring
- Jan 6 M6: The Butterfly Cluster
- Jan 5 A New Jupiter Oval Rotates
- Jan 4 Ring Around the Cluster
- Jan 3 Orion's Horsehead Nebula Copyrighted
- Jan 2 Mercury: A Cratered Inferno
- Jan 1 ESO202-G23: Merging Galaxies
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Source
- Astronomy Picture of the Day — NASA Science, science.nasa.gov/apod/archive
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