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Artemis 2 astronauts describe unexpected flashes on the moon during flight

When NASA’s Orion spacecraft swung behind the Moon on April 6, 2026, the Sun disappeared. For roughly an hour, the four ...
National Academies of Sciences%2c Engineering%2c and Medicine

Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Programs

NOTE: ZHR, zenithal hourly rate, the approximate number of shower-related meteors an observer would see under ideal conditions; Max Date, the date at which the highest flux of meteors is normally ...
National Academies of Sciences%2c Engineering%2c and Medicine

Limiting Future Collision Risk to Spacecraft: An Assessment of NASA's Meteoroid and Orbital Debris Programs

As indicated in Chapter 1, “Introduction and Historical Background,” NASA’s meteoroid and orbital debris (MMOD) models create the foundation for the technical services provided by the Orbital Debris ...