Moon

Astronomy Object archive with linked event snippets and related articles.

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March 21 in Universe History: Space Missions, Satellites and Exploration

March 21, 2026
2012 On 21 March 2012, Cassini’s Imaging Science Subsystem spent about 12 hours searching for possible small satellites near the stability region 60 degrees ahead of Titan in its orbit around Saturn, at the L4 Lagrange point. The campaign aimed to detect new moons or refine faint-object orbits, improving hazard assessment and observation planning during continuing mission operations at Saturn.
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Alphonsus Arianespace ASI AsiaSat 3S Atlas-Agena AVUM Baikonur BOLT-2 BurstCube Cape Canaveral Cassini CRS-30 Dragon Drew Feustel Europe’s Spaceport Expedition 1 Expedition 55 Expedition 56 Falcon 9 French Guiana High Energy Solar Spectroscopic Imager Imaging Science Subsystem Ingenuity International Launch Services JPL Kennedy L4 Lagrange point Leonardo Marina Vasilevskaya Mars 1 MDIS Mercury MESSENGER Mid-Atlantic Regional Spaceport NASA Planetary Data System National Reconnaissance Office NROL-123 Oleg Artemyev Oleg Novitskiy OneWeb PDS4 Standards Reference Perseverance PRISMA Proton Ranger 9 Ricky Arnold Rocket Lab Electron Saturn Soyuz Flight ST28 Soyuz MS-08 SpaceX SPICE Starsem Terrier-Improved Malemute Titan Tracy Dyson Vega Wallops Wallops Island Asia Europe Russia Air Force Research Laboratory Earth Io Mars Sun International Space Station Space Shuttle Discovery STS-102

March 20 in Universe History: Space Missions, Astronomy and Exploration

March 20, 2026
2015 On March 20, 2015, a total solar eclipse occurred as the Moon’s umbra skimmed Earth at a glancing angle on the March equinox. Totality passed south of Greenland to near the North Pole, crossing the Faroe Islands and Svalbard, while a broad partial eclipse was visible across Europe and beyond.
2024 On March 20, 2024, China launched the Queqiao-2 relay satellite on a Long March-8 rocket from the Wenchang Space Launch Site to provide Earth–Moon communications services, a key step for near-term far-side sample-return operations and longer-term south polar exploration in the Chinese lunar program.

March 20 Major Events in World History

March 20, 2026
2015 On 20 March 2015 a solar eclipse, the March equinox, and a full supermoon coincide, a rare astronomical alignment sometimes called a Super Blood Moon eclipse.