Year 2021, Month 05
- 01: Perseverance from Ingenuity
- 02: Clouds of the Carina Nebula
- 03: Apollo 11: Earth, Moon, Spaceship
- 04: Space Station, Solar Prominences, Sun
- 05: STEVE over Copper Harbor
- 06: Windblown NGC 3199
- 07: Mercury-Redstone 3 Launch
- 08: Deepscape at Yacoraite
- 09: Horsehead and Orion Nebulas
- 10: Star Clusters M35 and NGC 2158
- 11: Lightning and Orion Beyond Uluru
- 12: A Meteor and the Gegenschein
- 13: The Comet, the Whale, and the Hockey Stick
- 14: M104: The Sombrero Galaxy
- 15: The Southern Cliff in the Lagoon
- 16: NGC 602 and Beyond
- 17: NGC 4565: Galaxy on Edge
- 18: Jets from the Necklace Nebula
- 19: The Jellyfish and Mars
- 20: M13: The Great Globular Cluster in Hercules
- 21: Utopia on Mars
- 22: Markarian's Chain
- 23: The Galaxy Tree
- 24: Lightning Eclipse from the Planet of the Goats
- 25: The Moon During a Total Lunar Eclipse
- 26: The Outburst Clouds of Star AG Car
- 27: Mid-Eclipse and Milky Way
- 28: Total Lunar Eclipse from Sydney
- 29: Lunar Dust and Duct Tape
- 30: Aurora over Clouds
- 31: Mimas: Small Moon with a Big Crater