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OTD in Space – February 29: Happy Leap Day!
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This extra day only happens once every four years to compensate for the fact that the solar year is one-quarter of a day longer than the calendar year. But the first leap year actually had an extra 90 days, not just one. Before Julius Caesar adopted this new calendar, the Romans were using a 355-day lunar calendar. They added an entire leap month every once in a while when the seasons became too out of sync with the calendar, but only when Roman priests arbitrarily decided it was time to do so. To make things even more confusing, Caesar made the year 46 B.C. 445 days long to reset the calendar. The new Julian calendar became effective the next year and finally put an end to all this calendrical craziness.
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OTD in Space – February 11: NASA Launches Solar Dynamics Observatory
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OTD in Space – February 10: Radar Bounced Off Venus by MIT
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OTD in Space – February 24: Pulsars First Discovered
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OTD in Space – February 17: NASA Launches 5 THEMIS Aurora-Hunting Spacecraft
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OTD in Space – February 13: 1st Vega Rocket Launch
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OTD in Space – February 4: STS-63 Launches 'Orbital Debris Calibration Sphere'
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OTD in Space – February 16: Gerard Kuiper Discovers Uranus' Moon Miranda
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OTD in Space – February 22: Soviet Space Dogs Launch on Record-Setting Mission
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OTD in Space – February 29: Happy Leap Day!
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OTD in Space – February 5: Apollo 14 Lands on the Moon
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OTD in Space – February 19: Mir Space Station Launched
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OTD in Space – February 21: Germany's 1st Liquid-Fuel Rocket (Barely) Launches
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OTD in Space – February 8: NASA Astronauts Say Final Goodbye to Skylab
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OTD in Space – February 3: ISS Astronauts Launch SuitSat
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OTD in Space – February 26: 1st Launch of Saturn 1B Rocket
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OTD in Space – February 9: Great Meteor Procession of 1913
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OTD in Space – February 6: Astronauts Play Golf on the Moon
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OTD in Space – February 2: U.S. Air Force Launches Key Hole-7 Surveillance Satellite
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OTD in Space – February 12: NEAR-Shoemaker Lands on Asteroid Eros
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OTD in Space – February 14: Voyager 1 Takes Solar System 'Family Portrait'
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OTD in Space – February 25: Western Union Launches Westar 4 Communications Satellite
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OTD in Space – February 28: Discoverer 1 Spy Satellite Goes Missing After Launch
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OTD in Space – February 7: 1st Untethered Spacewalk
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OTD in Space – February 20: John Glenn Becomes 1st American to Orbit Earth
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