At 06:34:33 UTC on August 5, the upper stage (catalogued as 2025-010D) from the launch of Firefly’s Blue Ghost-1 lander on January 15, 2025 will impact the Moon at roughly 2.43 km/s (8,700 km/h or 5,400 mph) – resulting in a flash of light, vaporizing the upper stage and a impact plume of ejecta near the Einstein and Bell craters near the western lunar limb at approximately 19.455° N and longitude 266.406° E (which is 93.594° W) — the western lunar limb, which is the Earth-facing edge around the 10 o’clock position.

Researchers and those with sensitive enough telescopes will be able to witness the event.