2000 December 31: The Millennium that Defined Earth
2000 December 30: A Year of Resolving Backgrounds
2000 December 29: The Dark Horsehead Nebula
2000 December 28: Moon Mare and Montes
2000 December 27: The Dust and Ion Tails of Comet Hale Bopp
2000 December 26: Jupiter, Io, and Shadow
2000 December 25: The Eclipse Tree
2000 December 24: NGC 1850: Gas Clouds and Star Clusters
2000 December 23: Summer at the South Pole
2000 December 22: Simulated Supergiant Star
2000 December 21: Solstice And Season's Eclipse
2000 December 20: Sgr A: Fast Stars Near the Galactic Centre
2000 December 19: A Close Up of Aurora on Jupiter
2000 December 18: Oceans Under Jupiter's Ganymede
2000 December 17: M2 9: Wings of a Butterfly Nebula
2000 December 16: Degas Ray Crater on Mercury
2000 December 15: IC443's Neutron Star
2000 December 14: International Space Station Trail
2000 December 13: Manicouagan Impact Crater on Earth
2000 December 12: Jupiter Eyes Ganymede
2000 December 11: Composing the Omega Nebula
2000 December 10: Too Close to a Black Hole
2000 December 09: Apollo 17 Lunarscape: A Magnificent Desolation
2000 December 08: Abell 1795: A Galaxy Cluster's Cooling Flow
2000 December 07: Earth's San Andreas Fault
2000 December 06: Reflecting Merope
2000 December 05: Layered Mars: An Ancient Water World?
2000 December 04: The Circinus Galaxy
2000 December 03: Earth's North Magnetic Pole
2000 December 02: SN 1006: Pieces of the Cosmic Ray Puzzle
2000 December 01: A Frosty Crater On Mars
2000 November 30: Palomar 13's Last Stand
2000 November 29: Leonids from Orbit
2000 November 28: BZ Cam Bow Shock
2000 November 27: Earth at Night
2000 November 26: Leonids Above Torre de la Guaita
2000 November 25: A High Energy Fleet
2000 November 24: Long Leonid
2000 November 23: Cassini At Jupiter: Red Spot Movie
2000 November 22: The Orion Nebula in Hydrogen
2000 November 21: Fire on Earth
2000 November 20: A 2000 Leonid Through Orion
2000 November 19: Our Dusty Universe
2000 November 18: Jupiter And Family
2000 November 17: Leonid Sunrise
2000 November 16: A Daytime Fireball in 1944
2000 November 15: Coronal Rain, Solar Storm
2000 November 14: The Yardangs Of Mars
2000 November 13: Disorder in Stephan's Quintet
2000 November 12: The Lyman Alpha Forest
2000 November 11: The First Lunar Observatory
2000 November 10: X-Ray Cygnus A
2000 November 09: The Cosmic X-Ray Background
2000 November 08: October Skylights
2000 November 07: The Gum Nebula Supernova Remnant
2000 November 06: Heaven on Earth
2000 November 05: Jupiter Swallows Comet Shoemaker Levy 9
2000 November 04: Apollo 12: Self-Portrait
2000 November 03: New Moons For Saturn
2000 November 02: A Galaxy Collision in NGC 6745
2000 November 01: Double Asteroid 90 Antiope
2000 October 31: The Perseus Cluster's X-Ray Skull
2000 October 30: A Step Toward Gravitational Wave Detection
2000 October 29: Microwave Hotspots: The Oldest Structures Known
2000 October 28: Moonset, Planet Earth
2000 October 27: Close To Eros
2000 October 26: The Map Of Eros
2000 October 25: The Nebula And The Neutron Star
2000 October 24: Io Rotating
2000 October 23: Dwarf Elliptical Galaxy NGC 205 in the Local Group
2000 October 22: Wild Duck Open Cluster M11
2000 October 21: The Averted Side Of The Moon
2000 October 20: North Pole Below
2000 October 19: The Farthest Explosion Yet Measured
2000 October 18: The Space Shuttle Docking Ring
2000 October 17: Gemini North Images Bow Shock Near Galactic Centre
2000 October 16: Dust and Gas Surrounding Star R Coronae Australis
2000 October 15: Globular Cluster Omega Centauri
2000 October 14: The Ecliptic Plane
2000 October 13: Eclipse Moon Trail
2000 October 12: HETE-2 Rides Pegasus
2000 October 11: Cassini Spacecraft Approaches Jupiter
2000 October 10: The Einstein Cross Gravitational Lens
2000 October 09: A Polar Martian Dust Storm
2000 October 08: Earth's Richat Structure
2000 October 07: Sputnik: Traveling Companion
2000 October 06: X-Rays From Sirius B
2000 October 05: N81: Star Cradle in the SMC
2000 October 04: Barred Spiral Galaxy NGC 1300
2000 October 03: Saturn Rotates
2000 October 02: Pangea Ultima: Earth in 250 Million Years
2000 October 01: The Centre of Centaurus A
2000 September 30: Titania's Trenches
2000 September 29: September Sky
2000 September 28: Heating Coronal Loops
2000 September 27: Yepun
2000 September 26: Approaching Jupiter
2000 September 25: AR 9169: A Large Sunspot
2000 September 24: M16: Stars from Eagle's Eggs
2000 September 23: The Equal Night
2000 September 22: M55: Globular Star Cluster
2000 September 21: XZ Tauri System Ejects Gas Bubble
2000 September 20: Gangly Spiral Galaxy NGC 3184
2000 September 19: M17: Omega Nebula Star Factory
2000 September 18: Approaching the International Space Station
2000 September 17: Saturnian Aurora
2000 September 16: X-Ray Earth
2000 September 15: Aurora In West Texas Skies
2000 September 14: M82's Middle Mass Black Hole
2000 September 13: Comet LINEAR: Fade To Black
2000 September 12: Slightly Above Mars Pathfinder
2000 September 11: Antarctic Ozone Hole Widens
2000 September 10: White Dwarf Stars Cool
2000 September 09: X-Ray Moon and X-Ray Star
2000 September 08: Andromeda Island Universe
2000 September 07: IC 418: The Spirograph Nebula
2000 September 06: Emerging Planetary Nebula CRL 618
2000 September 05: CFHT Star Trails
2000 September 04: Aurora Persei
2000 September 03: Henrietta Leavitt Calibrates the Stars
2000 September 02: X-Ray Moon
2000 September 01: SOHO Sungrazer
2000 August 31: Full Throttle For Deep Space 1
2000 August 30: The Brown Dwarfs of Orion's Trapezium
2000 August 29: The Regolith of Asteroid Eros
2000 August 28: The Helix Nebula from CFHT
2000 August 27: Orion's Horsehead Nebula
2000 August 26: Mir Dreams
2000 August 25: Folding Europa
2000 August 24: Eros At Sunset
2000 August 23: NGC 6960: The Witch's Broom Nebula
2000 August 22: NGC 2244: A Star Cluster in the Rosette Nebula
2000 August 21: A Perseid Aurora
2000 August 20: The Surface of Titan
2000 August 19: ROSAT Explores The X-Ray Sky
2000 August 18: X-Rays From Antennae Galaxies
2000 August 17: Mount Megantic Magnetic Storm
2000 August 16: Unusual Giant Galaxy NGC 1316
2000 August 15: The Solar Spectrum
2000 August 14: Kemble's Cascade
2000 August 13: Doomed Star Eta Carinae
2000 August 12: A Perseid Meteor
2000 August 11: Fragments of Comet LINEAR
2000 August 10: Other Worlds and HD 38529
2000 August 09: A Solar Filament Lifts Off
2000 August 08: Comet LINEAR Disperses
2000 August 07: Nearby Star Epsilon Eridani Has a Planet
2000 August 06: The Coma Cluster of Galaxies
2000 August 05: Halley's Nucleus: An Orbiting Iceberg
2000 August 04: M15: Dense Globular Star Cluster
2000 August 03: 22 Miles From Eros
2000 August 02: At the Edge of the Crescent Nebula
2000 August 01: X-Rays from Comet LINEAR
2000 July 31: Comet LINEAR Breaks Up
2000 July 30: NGC 2440: Cocoon of a New White Dwarf
2000 July 29: NGC1850: Star Cluster in the LMC
2000 July 28: Moon And Venus Share The Sky
2000 July 27: Tails Of Comet LINEAR
2000 July 26: Lingering Lunar Eclipse
2000 July 25: Why Stars Twinkle
2000 July 24: M51: The Whirlpool Galaxy
2000 July 23: Isaac Newton Explains the Solar System
2000 July 22: GLAST Gamma Ray Sky Simulation
2000 July 21: Eros Craters And Boulders
2000 July 20: AR9077: Solar Magnetic Arcade
2000 July 19: Globular Cluster M19
2000 July 18: A Russian Proton Rocket Launches Zvezda
2000 July 17: Lightning on Earth
2000 July 16: M57: The Ring Nebula
2000 July 15: Star Trails in Southern Skies
2000 July 14: Crater On Ice
2000 July 13: LP 944-20: A Failed Star Flares
2000 July 12: A Giant Starspot on HD 12545
2000 July 11: The Crab Nebula in Blue and White
2000 July 10: Comet LINEAR Extends
2000 July 09: The Hubble Deep Field
2000 July 08: The United States At Night
2000 July 07: Sirius, Sun, Moon, and Southern Cross
2000 July 06: A Jet from Galaxy M87
2000 July 05: The Galactic Centre Across the Infrared
2000 July 04: Comet LINEAR Approaches
2000 July 03: Pelican Nebula Ionization Front
2000 July 02: Gamma Ray Burst: A Milestone Explosion
2000 July 01: Ultraviolet Earth from the Moon
2000 June 30: Vintage Gamma Rays
2000 June 29: Galactic Centre Starscape
2000 June 28: BATSE GRB Final Sky Map
2000 June 27: M63: The Sunflower Galaxy
2000 June 26: Newton Crater: Evidence for Recent Water on Mars
2000 June 25: Shapley 1: An Annular Planetary Nebula
2000 June 24: Sunlight Through Saturn's Rings
2000 June 23: The Gullies Of Mars
2000 June 22: Blue Stragglers In NGC 6397
2000 June 21: Solstice Celebration
2000 June 20: Ganymede: The Largest Moon in the Solar System
2000 June 19: The Long Jet of Pictor A
2000 June 18: The Milky Way Near the Southern Cross
2000 June 17: The Last Moon Shot
2000 June 16: APOD is Five Years Old Today
2000 June 15: X-Rays From The Perseus Cluster Core
2000 June 14: A Slice of the Universe with 2dF
2000 June 13: The Keyhole Nebula in Infrared
2000 June 12: A Bubbling Galaxy Centre
2000 June 11: Sirius: The Brightest Star in the Night
2000 June 10: M101: An Ultraviolet View
2000 June 09: Vela Pulsar: Neutron Star-Ring-Jet
2000 June 08: Active Regions, CMEs, and X-Class Flares
2000 June 07: Up Close to Jupiter's Moon Io
2000 June 06: A Continuous Eruption on Jupiter's Moon Io
2000 June 05: In the Heart of the Crab
2000 June 04: MyCn18: An Hourglass Nebula
2000 June 03: Compton Reentry
2000 June 02: The Secret Spiral Of IC3328
2000 June 01: X-Ray Wind From NGC 3783
2000 May 31: Astronaut at Work
2000 May 30: The Very Large Array Turns Twenty
2000 May 29: Olympus Mons Volcano on Mars
2000 May 28: Skylab Over Earth
2000 May 27: M51: The Centre Of The Whirlpool
2000 May 26: Solar Sail
2000 May 25: Eros Horizon View
2000 May 24: Pleiades, Planets, And Hot Plasma
2000 May 23: M4: The Closest Known Globular Cluster
2000 May 22: Light Bridges on the Sun
2000 May 21: Antares and Rho Ophiuchi
2000 May 20: Sungrazer
2000 May 19: An Aurora Before the Storm
2000 May 18: The Near Infrared Sky
2000 May 17: The Far Infrared Sky
2000 May 16: QSO H1821 643 Indicates a Universe Filled with Hydrogen
2000 May 15: A Halo Around the Moon
2000 May 14: A Presidential Panorama of Mars
2000 May 13: Surveyor Slides
2000 May 12: X-Ray Ring Around SN1987A
2000 May 11: NGC 3314: When Galaxies Overlap
2000 May 10: Dog-Bone Shaped Asteroid 216 Kleopatra
2000 May 09: The Race to Reveal Our Universe
2000 May 08: Jupiter's Moons Thebe, Amalthea, and Metis
2000 May 07: A Green Flash from the Sun
2000 May 06: The Heart Of Orion
2000 May 05: Planets In The Sun
2000 May 04: Planets Above The Clouds
2000 May 03: BOOMERANG Images The Early Universe
2000 May 02: An Iridium Flash Sunset
2000 May 01: The North America Nebula
2000 April 30: The Small Cloud of Magellan (SMC)
2000 April 29: 3D View Of Jupiter's Clouds
2000 April 28: Leonid Glowworm
2000 April 27: Calderas And Cliffs Near Io's South Pole
2000 April 26: Filaments In The Cygnus Loop
2000 April 25: Layers of the Martian South Polar Cap
2000 April 24: Reflection Nebula M78
2000 April 23: Giant Cluster Bends, Breaks Images
2000 April 22: Journey to the Centre of the Galaxy
2000 April 21: M82: Starburst in X-rays
2000 April 20: Blue Marble 2000
2000 April 19: Redshift 5.8: A New Farthest Quasar
2000 April 18: Europa: Ice Line
2000 April 17: Flying Over Asteroid Eros West End
2000 April 16: IC 4406: A Seemingly Square Nebula
2000 April 15: Surveyor Hops
2000 April 14: Supernova Remnant E0102 72 from Radio to X-Ray
2000 April 13: Exploring Comet Tails
2000 April 12: The Local Bubble and the Galactic Neighborhood
2000 April 11: The Local Interstellar Cloud
2000 April 10: Aurora in Red and Yellow
2000 April 09: Mysterious Pluto and Charon
2000 April 08: Compton Observatory In Orbit
2000 April 07: Celebrating Hubble With NGC 6751
2000 April 06: Venus, Moon, and Neighbors
2000 April 05: The M7 Open Star Cluster in Scorpius
2000 April 04: A Superwind from the Cigar Galaxy
2000 April 03: A Twisted Solar Eruptive Prominence
2000 April 02: Eagle EGGs in M16
2000 April 01: Planet Earth From TIROS 1: First TV Image
2000 March 31: Free-Floating Planets In Orion
2000 March 30: Saturn-Sized Worlds Discovered
2000 March 29: Fullerenes as Miniature Cosmic Time Capsules
2000 March 28: M20: The Trifid Nebula
2000 March 27: Flying Over Asteroid Eros
2000 March 26: Venus' Once Molten Surface
2000 March 25: The Earth Also Rises
2000 March 24: A Mystery in Gamma Rays
2000 March 23: Inside Mars
2000 March 22: A Spherule from Outer Space
2000 March 21: HH111's 12 Light-Year Star Jet
2000 March 20: Mercury on the Horizon
2000 March 19: Apollo 16: Exploring Plum Crater
2000 March 18: A Wind From The Sun
2000 March 17: Martian Dust Devil Trails
2000 March 16: NEAR Shoemaker Views Eros
2000 March 15: Weak Lensing Distorts the Universe
2000 March 14: A GRB 000301C Symphony
2000 March 13: A Panorama of Oddities in Orion A
2000 March 12: Supernova 1994D and the Unexpected Universe
2000 March 11: Messier Marathon
2000 March 10: Sky and Planets
2000 March 09: Sun Storm: A Coronal Mass Ejection
2000 March 08: Nearer To Asteroid Eros
2000 March 07: Zal Patera on Jupiter's Moon Io
2000 March 06: Abell 2142: Clash of the Galaxy Clusters
2000 March 05: The Pipe Dark Nebula
2000 March 04: Saturn At Night
2000 March 03: Dust Storm on Planet Earth
2000 March 02: NGC 1999: Reflection Nebula In Orion
2000 March 01: M13: The Great Globular Cluster in Hercules
2000 February 29: Julius Caesar and Leap Days
2000 February 28: The Sombrero Galaxy from VLT
2000 February 27: The Pleiades Star Cluster
2000 February 26: Impact: 65 Million Years Ago
2000 February 25: The Comets Of SOHO
2000 February 24: Stereo Eros
2000 February 23: Sunspot Seething
2000 February 22: Neighboring Galaxy: The Large Magellanic Cloud
2000 February 21: A Giant Gouge on Asteroid Eros
2000 February 20: The Virgo Cluster of Galaxies
2000 February 19: Young Suns
2000 February 18: Neptune through Adaptive Optics
2000 February 17: New Shocks For Supernova 1987A
2000 February 16: Eros From Orbit
2000 February 15: M106: A Spiral Galaxy with a Strange Core
2000 February 14: An Unexpected Asteroid Valentine
2000 February 13: Southwest Mercury
2000 February 12: Stereo Saturn
2000 February 11: XMM-Newton First Light: X-Rays From The LMC
2000 February 10: Eros Encounter Nears
2000 February 09: Galaxy Wars: M81 Versus M82
2000 February 08: Rings Around Beta Pictoris
2000 February 07: The W4 Chimney
2000 February 06: The Mysterious Rings of Supernova 1987A
2000 February 05: NEAR to Asteroid Eros
2000 February 04: X-Ray Stars Of Orion
2000 February 03: Colourful Clouds Of Carina
2000 February 02: Aeolian Mars
2000 February 01: Abell 2218: A Galaxy Cluster Lens
2000 January 31: Snowstorm on Planet Earth
2000 January 30: The Milky Way in Infrared
2000 January 29: Natural Saturn On The Cassini Cruise
2000 January 28: Astronomy From An F-18
2000 January 27: Spiral Galaxy In Centaurus
2000 January 26: A Lunar Eclipse Over Time
2000 January 25: A Lunar Eclipse in Three Exposures
2000 January 24: The Eskimo Nebula from the Newly Fixed Hubble
2000 January 23: A Message From Earth
2000 January 22: Magnetar In The Sky
2000 January 21: X For Andromeda
2000 January 20: X-Rays From The Galactic Centre
2000 January 19: A Big Black Hole Floats By
2000 January 18: NGC 7635: The Bubble Nebula
2000 January 17: V4641 Sgr: The Closest Black Hole Candidate
2000 January 16: The Compton Gamma Ray Observatory
2000 January 15: The Sun Also Rises
2000 January 14: Chandra Resolves the Hard X-Ray Background
2000 January 13: A Skygazers Full Moon
2000 January 12: NGC 6791: An Old, Large Open Cluster
2000 January 11: The Rosette Nebula in Hydrogen, Oxygen, and Sulfur
2000 January 10: Brown Sun Bubbling
2000 January 09: Galaxy Dwingeloo 1 Emerges
2000 January 08: Albert Einstein Describes Space and Time
2000 January 07: NGC 4214: Star Forming Galaxy
2000 January 06: Mars in the New Year
2000 January 05: Earth, Moon, Hubble
2000 January 04: Galaxies Cluster Toward the Great Attractor
2000 January 03: Cas A Supernova Remnant in X-Rays
2000 January 02: The Largest Rock Known
2000 January 01: The Millennium that Defines Universe
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