March (continued)
- Mar 17 - Asteroid 1620 Geographos Near-Earth Flyby (0.125 AU)
- Mar 17 - 50th Anniversary (1958), Vanguard 1 Launch
- Mar 17-21 - Conference: Galactic Structure and the Structure of Galaxies, Ensenada, Mexico
- Mar 18 - ICO-G Atlas 5 Launch
- Mar 18 - Comet Mrkos Closest Approach To Earth (0.717 AU)
- Mar 18 - Asteroid 2002 FW1 Near-Earth Flyby (0.079 AU)
- Mar 18 - Asteroid 2322 Kitt Peak Closest Approach To Earth (1.380 AU)
- Mar 18-19 - 8th British Gravity Meeting, York, United Kingdom
- Mar 20 - Vernal Equinox, 05:48 UT
- Mar 20 - Comet 186P/Garradd Perihelion (4.263 AU)
- Mar 20 - Asteroid 12927 Pinocchio Closest Approach To Earth (1.558 AU)
- Mar 20 - Asteroid 16035 Sasandford Closest Approach To Earth (1.901 AU)
- Mar 20 - Lecture: Enceladus - The Newest Wrinkle from Saturn's Tiger-Striped Moon, Pasadena, California
- Mar 21 - Asteroid 2003 FY6 Near-Earth Flyby (0.016 AU)
- Mar 21 - Lecture: Enceladus - The Newest Wrinkle from Saturn's Tiger-Striped Moon, Pasadena, California
- Mar 22 - Cassini, Orbital Trim Maneuver #151 (OTM-151)
- Mar 22 - Asteroid 2007 DD Near-Earth Flyby (0.084 AU)
- Mar 23 - Cassini, Distant Flyby of Pallene, Epimetheus & Methone
- Mar 23 - Easter Sunday
- Mar 23 - Comet Grigg-Skjellerup Perihelion (1.117 AU)
- Mar 23 - Comet Grigg-Skjellerup Closest Approach To Earth (0.559 AU)
- Mar 23 - Comet 113P/Spitaler Perihelion (2.129 AU)
- Mar 23 - Asteroid 2709 Sagan Closest Approach To Earth (1.050 AU)
- Mar 23 - Asteroid 8749 Beatles Closest Approach To Earth (1.262 AU)
- Mar 23 - Asteroid 5790 Nagasaki Closest Approach To Earth (1.889 AU)
- Mar 24 - Asteroid 2933 Amber Closest Approach To Earth (1.741 AU)
- Mar 24 - Asteroid 9253 Oberth Closest Approach To Earth (1.793 AU)
- Mar 24 - Wilhelm Baade's 115th Birthday (1893)
- Mar 24-26 - 2nd Workshop on Titan - Observations, Experiments, Computations, and Modeling, Miami, Florida
- Mar 25 - Cassini, Titan Flyby
- Mar 26 - Comet C/2007 P1 (McNaught) Perihelion (0.633 AU)
- Mar 26-29 - Meeting: The Cosmic Agitator - Magnetic Fields in the Galaxy, Lexington, Kentucky
- Mar 27 - SAR-Lupe 4 Cosmos 3M Launch
- Mar 27 - Lecture: International Polar Year - Understanding the Poles of the Earth, Moon and Mars, Paris, France
- Mar 28 - Vinasat 1 Ariane 5 Launch
- Mar 28 - Asteroid 4967 Madrid Closest Approach To Earth (1.937 AU)
- Mar 28- Apr 06 - Smoky Mountain Stargaze 2008, Whittier, North Carolina
- Mar 29 - Asteroid 2003 WP25 Near-Earth Flyby (0.077 AU)
- Mar 29 - Asteroid 9250 Chamberlin Closest Approach To Earth (1.704 AU)
- Mar 29 - Asteroid 4664 Hanner Closest Approach To Earth (2.065 AU)
- Mar 29 - 10th Anniversary (1998), Galileo, Europa 14 Flyby
- Mar 30 - Daylight Saving - Set Clock Ahead 1 Hour (Europe)
- Mar 30 - Asteroid 2002 VX91 Near-Earth Flyby (0.079 AU)
- Mar 30 - Asteroid 2955 Newburn Closest Approach To Earth (1.121 AU)
- Mar 30 - Asteroid 11911 Angel Closest Approach To Earth (2.730 AU)
- Mar 31 - Comet C/2007 M2 (Catalina) Closest Approach To Earth (3.255 AU)
- Mar 31-Apr 03 - AAS High Energy Astrophysics Division Meeting (HEAD2008), Los Angeles, California
- Mar 31-Apr 08 - Meeting: Deep Surveys of the Radio Universe with SKA Pathfinders , Perth, Australia
