February (continued)
- Feb 26-27 - Conference: Venus Geochemistry - Progress, Prospects, and New Missions, Houston, Texas
- Feb 26-28 - 3rd Workshop on Titan Chemistry - Observations, Experiments, Computations, and Modeling, San Juan, Puerto Rico
- Feb 28 - Space Technology 8 (ST8) Pegasus XL Launch
- Feb 28 - Asteroid 2005 XV77 Near-Mercury Flyby (0.026 AU)
- Feb 28 - Asteroid 2004 XN50 Near-Mercury Flyby (0.029 AU)
- Feb 28 - Asteroid 2007 CX50 Near-Mars Flyby (0.031 AU)
- Feb 28 - Asteroid 4148 McCartney Closest Approach To Earth (1.050 AU)
- Feb 28 - Asteroid 117329 Spencer Closest Approach To Earth (1.059 AU)
- Feb 28 - Sally Ride Science Festival, Beaumont, Texas
- Feb 28 - 50th Anniversary (1959), Discoverer 1 Launch
March
- Mar 01 - Asteroid 2008 EY5 Near-Earth Flyby (0.087 AU)
- Mar 01 - Asteroid 37582 Faraday Closest Approach To Earth (1.617 AU)
- Mar 01 - Asteroid 24102 Jacquecassini Closest Approach To Earth (1.722 AU)
- Mar 02 - 5th Anniversary (2004), Rosetta Launch
- Mar 02-06 - Conference: Planet Formation and Evolution - The Solar System and Extrasolar Planets, Tubingen, Germany
- Mar 02-06 - Meeting: The Interferometric View on Hot Stars, Vina del Mar, Chile
- Mar 03 - 40th Anniversary (1969), Apollo 9 Launch
- Mar 03-04 - Mars Exploration Program Analysis Group (MEPAG) Meeting #20, Washington DC
- Mar 05 - KeplerDelta 2 Launch
- Mar 05 - Asteroid 4099 Wiggins Closest Approach To Earth (1.583 AU)
- Mar 05 - 30th Anniversary (1979), Voyager 1, Jupiter Flyby
- Mar 07 - Asteroid 5049 Sherlock Closest Approach To Earth (1.534 AU)
- Mar 07 - Asteroid 4017 Disneya Closest Approach To Earth (1.850 AU)
- Mar 07 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.971 AU)
- Mar 07 - Triad Starfest (TriStar), Jamestown, North Carolina
- Mar 08 - Daylight Saving - Set Clock Ahead 1 Hour (United States)
- Mar 08 - Saturn At Opposition
- Mar 08 - Sally Ride Science Festival, Pasadena, California
- Mar 09 - Cassini, Orbital Trim Maneuver #183 (OTM-183)
- Mar 09 - Asteroid 2005 ES70 Near-Earth Flyby (0.082 AU)
- Mar 09 - Asteroid 1862 Apollo Closest Approach To Earth (1.239 AU)
- Mar 09 - Yuri Gagarin's 75th Birthday (1934)
- Mar 09-11 - Workshop on Cross-Scale Coupling in Plasmas, Cosenza, Italy
- Mar 09-12 - 2nd Subaru International Conference: Exoplanets and Disks - Their Formation and Diversity, Keauhou, Hawaii
- Mar 11 - Asteroid 2007 FS3 Near-Earth Flyby (0.016 AU)
- Mar 11 - Asteroid 2003 WP25 Near-Earth Flyby (0.036 AU)
- Mar 11 - Asteroid 4221 Picasso Closest Approach To Earth (1.447 AU)
- Mar 11 - Asteroid 6030 Zolensky Closest Approach To Earth (2.318 AU)
- Mar 13 - Asteroid 2008 EZ84 Near-Earth Flyby (0.090 AU)
- Mar 13 - Asteroid 4457 van Gogh Closest Approach To Earth (1.326 AU)
- Mar 14 - Albert Einstein's 130th Birthday (1879)
- Mar 15 - Asteroid 8353 Megryan Closest Approach To Earth (1.853 AU)
- Mar 15 - Dwarf Planet MakemakeClosest Approach To Earth (51.231 AU)