OTD in Space - Sept. 24: India's 1st Mars Mission Reaches Orbit

Dwarf planet Ceres discovered in 1801 - On This Day In Space | Jan. 1

Stardust flew by comet Wild 2 - On This Day In Space | Jan. 2

Cassini flew by Saturn's moon Iapetus - On This Day In Space | Dec. 31

First photo of Earth's curvature snapped - On This Day In Space | Dec. 30

Captain Cook observed 1777 solar eclipse - On This Day In Space | Dec. 29

Auroras seen on Jupiter's moon Ganymede - On This Day In Space | Dec. 28

OTD in Space – January 4: NASA Cancels Apollo 20 Moon Mission

OTD in Space – January 5: Discovery of Eris Ignites Pluto-Planet Debate

OTD in Space – January 6: Last Surveyor Spacecraft Launches to the Moon

OTD in Space – January 7: Galileo Discovers 3 Moons of Jupiter

OTD in Space – January 8: Soviet Union Launches 2nd Lunar Rover

OTD in Space – January 9: 'Ashen Light' Discovered on Venus

OTD in Space – January 10: Radar Astronomy is Born!

OTD in Space – January 11: William Herschel Discovers 2 Moons of Uranus

OTD in Space – January 12: Deep Impact Spacecraft Launches to a Comet

OTD in Space – January 13: NASA Hires First Female Astronauts

OTD in Space – January 14: Huygens Probe Lands on Saturn's Moon Titan

OTD in Space – January 15: Stardust Spacecraft Returns Samples of Comet Dust

OTD in Space – January 16: 1st Docking of 2 Crewed Spacecraft

OTD in Space – January 17: Final Aerobee Sounding Rocket Launched

OTD in Space – January 18: Gemini South Observatory Dedicated

OTD in Space – January 19: New Horizons Launched

OTD in Space – January 20: 1st Progress Cargo Delivery Mission Launched

OTD in Space – January 21: 'Miss Sam' the Rhesus Monkey Launched into Space

OTD in Space – January 22: Pioneer 10 Beams Last Signal to Earth

OTD in Space – January 23: NASA's Glenn Research Center is Founded

OTD in Space – January 24: Voyager 2 Flies Past Uranus

OTD in Space – January 25: Opportunity Rover Lands on Mars

OTD in Space – January 26: International Ultraviolet Explorer Launched

OTD in Space – January 27: Apollo 1 Fire

OTD in Space – January 28: Space Shuttle Challenger Explodes After Launch

OTD in Space – January 29: Phobos 2 Enters Orbit Around Mars

OTD in Space – January 30: Ranger 6 Launched

OTD in Space – January 31: Ham the Chimpanzee Takes Flight

OTD in Space – February 1: Space Shuttle Columbia Disaster

OTD in Space – February 2: U.S. Air Force Launches Key Hole-7 Surveillance Satellite

OTD in Space – February 3: ISS Astronauts Launch SuitSat

OTD in Space – February 4: STS-63 Launches 'Orbital Debris Calibration Sphere'

OTD in Space – February 5: Apollo 14 Lands on the Moon

OTD in Space – February 6: Astronauts Play Golf on the Moon

OTD in Space – February 7: 1st Untethered Spacewalk

OTD in Space – February 8: NASA Astronauts Say Final Goodbye to Skylab

OTD in Space – February 9: Great Meteor Procession of 1913

OTD in Space – February 10: Radar Bounced Off Venus by MIT

OTD in Space – February 11: NASA Launches Solar Dynamics Observatory

OTD in Space – February 12: NEAR-Shoemaker Lands on Asteroid Eros

OTD in Space – February 13: 1st Vega Rocket Launch

OTD in Space – February 14: Voyager 1 Takes Solar System 'Family Portrait'

OTD in Space – February 15: Meteor Explodes Over Chelyabinsk, Russia

OTD in Space – February 16: Gerard Kuiper Discovers Uranus' Moon Miranda

OTD in Space – February 17: NASA Launches 5 THEMIS Aurora-Hunting Spacecraft

OTD in Space – February 18: Pluto Discovered by Clyde Tombaugh

OTD in Space – February 19: Mir Space Station Launched

OTD in Space – February 20: John Glenn Becomes 1st American to Orbit Earth

OTD in Space – February 21: Germany's 1st Liquid-Fuel Rocket (Barely) Launches

OTD in Space – February 22: Soviet Space Dogs Launch on Record-Setting Mission

OTD in Space – February 23: Pioneer 11 Leaves the Solar System

OTD in Space – February 24: Pulsars First Discovered

OTD in Space – February 25: Western Union Launches Westar 4 Communications Satellite

OTD in Space – February 26: 1st Launch of Saturn 1B Rocket

OTD in Space – February 27: J.S. Hey Discovers Radio Emissions From the Sun

OTD in Space – February 28: Discoverer 1 Spy Satellite Goes Missing After Launch

OTD in Space – February 29: Happy Leap Day!

OTD in Space – March 1: Scott Kelly Returns from a Year in Space

OTD in Space – March 2: Rosetta Spacecraft Launches to Comet 67P

OTD in Space – March 3: Apollo 9 Launches 1st Test Flight of Lunar Module

OTD in Space – March 4: Jupiter's Rings Discovered

OTD in Space – March 5: Soviet Space Probe Lands on Venus

OTD in Space – March 6: Vega 1 Flies by Halley's Comet

OTD in Space – March 7: NASA Launches Orbiting Solar Observatory

OTD in Space – March 8: Volcanoes Spotted on Jupiter's Moon Io

OTD in Space – March 9: Soviet Union Launches Dummy, Dog and Guinea Pig into Space

OTD in Space – March 10: Rings Discovered at Uranus

OTD in Space – March 11: 1st Japanese Module & 'Dextre' Robot Launch to Space Station

OTD in Space – March 12: NASA Launches Magnetospheric Multiscale Mission

OTD in Space – March 13: Uranus Discovered!

OTD in Space – March 14: ExoMars Mission Launches to Search for Life on Mars

OTD in Space – March 15: Alais Meteorite Brings Organic Chemicals from Space

OTD in Space – March 16: Gemini 8 Achieves First Space Docking

OTD in Space – March 17: U.S. Launches Its Second Satellite, Vanguard 1

OTD in Space – March 18: Soviet Rocket Explosion Kills 48 People

OTD in Space – March 19: Ionospheric Satellite Fails to Reach Orbit

OTD in Space – March 20: NASA Launches Palapa B2P Satellite for Indonesia

OTD in Space – March 21: NASA Launches Ranger 9

OTD in Space – March 22: Comet Hale-Bopp Flies by Earth

OTD in Space – March 23: First Photo of the Moon

OTD in Space – March 24: Mercury-Redstone BD Rocket Launches on Uncrewed Test Flight

OTD in Space – March 25: Christiaan Huygens Discovers Saturn's Moon Titan

OTD in Space – March 26: U.S. Army Launches Explorer 3 Satellite

OTD in Space – March 27: Phobos 2 Mission to Martian Moon Ends in Failure

OTD in Space – March 28: Last Test Flight of NASA's Saturn 1 Rocket Booster

OTD in Space – March 29: Heinrich Olbers Discovers Asteroid Vesta

OTD in Space – March 30: SpaceX Launches & Lands Used Rocket in Historic 1st Reflight

OTD in Space – March 31: NASA Approves Gemini Spacecraft Design

OTD in Space – April 1: NASA Launches TIROS-1, First US Weather Satellite

OTD in Space – April 2: Luna 4 Launches on Lunar Flyby Mission

OTD in Space – April 3: Soviet Union Launches Salyut 2 Space Station

OTD in Space – April 4: Last Uncrewed Apollo Test Flight

OTD in Space – April 5: Pioneer 11 Launches to Jupiter & Saturn

OTD in Space – April 7: 1st Spacewalk from Space Shuttle

OTD in Space – April 8: 1st Test Flight of Gemini Spacecraft

OTD in Space – April 9: NASA Introduces the 'Mercury 7' Astronauts

OTD in Space – April 10: India Launches 1st Multipurpose Satellite

OTD in Space – April 11: 'Project Ozma' Begins Search for Alien Life

OTD in Space – April 12: Yuri Gagarin Becomes 1st Human in Space

OTD in Space – April 13: NASA Launches Nimbus 3 Weather Satellite

OTD in Space – April 14: 1st Space Shuttle Mission Lands

OTD in Space – April 15: NASA Spacecraft Collides with Satellite

OTD in Space – April 16: Apollo 16 Launches to the Moon

OTD in Space – April 17: Apollo 13 Returns

OTD in Space – April 18: LADEE Crashes into the Moon

OTD in Space – April 19: World's 1st Space Station Launches into Orbit

OTD in Space – April 20: Moon Doesn't Turn Green, Despite Internet Rumors

OTD in Space – April 21: 1st Space Funeral Launches on 'Founders Flight'

OTD in Space – April 22: X-37B Launches on 1st Top-Secret Orbital Mission

OTD in Space – April 23: Ranger 4 Launches on Failed Moon Mission

OTD in Space – April 24: China Launches Its 1st Satellite

OTD in Space – April 25: STS-31 Deploys Hubble Space Telescope

OTD in Space – April 26: Britain Launches Its 1st Satellite

OTD in Space – April 27: NASA Launches Explorer 11

OTD in Space – April 28: World's 1st Space Tourist Launches to Space Station

OTD in Space – April 29: European 'Spacelab' Launches on Space Shuttle Challenger

OTD in Space – April 30: MESSENGER Spacecraft Crashes into Mercury

OTD in Space – May 1: Neptune's Moon Nereid Discovered

OTD in Space – May 2: Maser 10 Launches on Final Flight of Skylark Rocket

OTD in Space – May 3: Delta Rocket Fails to Launch GOES-G Weather Satellite

OTD in Space – May 4: 1st Official 'Star Wars' Day Celebration

OTD in Space – May 5: Al Shepard Becomes 1st American in Space

OTD in Space – May 6: Neil Armstrong Narrowly Escapes Fiery Crash

OTD in Space – May 7: Space Shuttle Endeavour Launches on Maiden Voyage

OTD in Space – May 8: Centaur Rocket Explodes During Maiden Flight

OTD in Space – May 9: Japan Launches Hayabusa Mission to Asteroid

OTD in Space – May 10: M2-F2 Lifting Body Crashes

OTD in Space – May 11: Final Hubble Servicing Mission Launches

OTD in Space – May 12: Last Spacewalk at Mir Space Station

OTD in Space – May 13: Apollo Spacecraft Launches for Abort Test

OTD in Space – May 14: NASA Launches 1st Skylab Space Station

OTD in Space – May 15: Last Flight of NASA's Mercury Program

OTD in Space – May 16: Space Shuttle Endeavour Launches on Final Flight

OTD in Space – May 17: NASA Launches 1st Synchronous Meteorological Satellite

OTD in Space – May 19: STS-101 Launches with 1st 'Glass Cockpit'

OTD in Space – May 20: NASA Launches Pioneer Venus 1

OTD in Space – May 21: Japan Launches 1st Solar Sail on 'Ikaros' Spacecraft

OTD in Space – May 22: SpaceX Launches 1st Private Cargo Mission to the International Space Station

OTD in Space – May 23: NASA Astronauts Take Impromptu Spacewalk

OTD in Space – May 24: NASA Launches Aurora 7

OTD in Space – May 25: Phoenix Spacecraft Lands on Mars

OTD in Space – May 26: Europe Launches EXOSAT X-Ray Telescope

OTD in Space – May 27: Expedition 20 Doubles Space Station's Crew Size

OTD in Space – May 28: Able & Baker Become 1st Monkeys to Survive Spaceflight

OTD in Space – May 29: Einstein's Theory of Relativity Tested with Total Solar Eclipse

OTD in Space – May 30: European Space Agency Established

OTD in Space – May 31: Kristall Module Launches to Mir Space Station

OTD in Space – June 1: Endeavour’s Final Touchdown

OTD in Space – June 2: First American Spacecraft on the Moon

OTD in Space – June 3: First American Spacewalk

OTD in Space – June 4: Falcon 9 Rocket Reaches Orbit

OTD in Space – June 5: Endeavour Launches on Mission to ISS

OTD in Space – June 6: Thagard Breaks Space Endurance Record

OTD in Space – June 7: Gemini 4 Returns to Earth

OTD in Space – June 8: X-15 Makes First Glide Flight

OTD in Space – June 9: Abee Meteorite Falls in Canada

OTD in Space – June 10: Classic Curved Space Lecture Spoken

OTD in Space – June 11: International Crew Returns to Earth

OTD in Space – June 12: Venera 4 Launches on Mission to Venus

OTD in Space – June 13: China’s Spacecraft Docks with Space Lab

OTD in Space – June 14: Patent for Liquid-Fueled Rocket Granted

OTD in Space – June 15: Iran Launches Satellite Into Orbit

OTD in Space – June 16: First Woman Travels Into Space

OTD in Space – June 17: First Arab and Muslim in Space

OTD in Space – June 18: America’s First Woman in Space

OTD in Space – June 19: Vostok 5 & Vostok 6 Return to Earth

OTD in Space – June 20: Challenger Launches Palapa B Satellite

OTD in Space – June 21: 1st Privately Funded Human Space Flight

OTD in Space – June 22: Possible Evidence of Liquid Found on Mars

OTD in Space – June 23: XS-1’s 117th Flight

OTD in Space – June 24: Unmanned Spacecraft’s 2nd Venus Flyby

OTD in Space – June 25: Spacecraft Collides With Module

OTD in Space – June 26: Research Station Moves to New Base

OTD in Space – June 27: NEAR Shoemaker Flies by 253 Mathilde

OTD in Space – June 28: SpaceX Rocket Explodes After Liftoff

OTD in Space – June 29: Cosmonauts Found Dead After Returning

OTD in Space – June 30: Explosion From Space Levels Miles of Forest

OTD in Space – July 1: Kennedy Space Center Established

OTD in Space – July 2: Space Probe Launches to Halley’s Comet

OTD in Space – July 3: Japan Launches Nozomi Mars Mission

OTD in Space – July 4: Mars Pathfinder Arrives on Mars

OTD in Space – July 5: Russian Cargo Ship Arrives at Space Station

OTD in Space – July 6: Discovery of Jupiter’s Moon Lysithea

OTD in Space – July 7: Discoverer 26 Launches

OTD in Space – July 8: Atlantis Launches on Final Mission

OTD in Space – July 9: Voyager 2’s Closest Approach to Jupiter

OTD in Space – July 10: 1st Private Space Mission Launches

OTD in Space – July 11: Abandoned Skylab Returns to Earth

OTD in Space – July 12: Communications Satellite Olympus Launched

OTD in Space – July 13: Luna 15 Heads to the Moon

OTD in Space – July 14: New Horizons Flies by Pluto

OTD in Space – July 15: Apollo-Soyuz Launch

OTD in Space – July 16: Apollo 11 Launches to the Moon