Astronomical League Observing Challenge

This Observing Challenge is available to anyone, not just Astronomical League members. To complete the challenge, take the following steps:

• Do an outreach activity sharing information about lunar exploration or the Moon. This could be an official International Observe the Moon Night event, or any activity that encourages observing the Moon in general.
• Observe the Moon between October 2, 2025 and October 11, 2025, using binoculars or a telescope. (Looking for a telescope loan? Search for a local astronomy club, or check out the library telescope program.)
  • Observe these four maria (dark areas), and label them on a sketch or image of the Moon.
    • Mare Serenitatis
    • Mare Tranquilitatis
    • Mare Imbrium
    • Mare Cognitum
  • Label the 6 Apollo Mission landing sites on your Moon sketch or image.
  • Note the equipment you used to observe.

For more information about the challenge, including details about how to document and submit your observations, visit the Astronomical League website.

Note: You may make your challenge observations anytime between October 2 and October 11, 2025. The deadline for submission is November 11, 2025.