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Do UAPs Conserve Momentum? A Video Analysis to Find the Mass of an Unidentified Orb

5 min readSep 13, 2025
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Screen capture from a video showing a collision between a hellfire missile and a UAP

There’s a lot of stuff I don’t know about this situation. Here’s what I do know. There’s a video from a drone that shows the impact between a missile and some Unknown Aerial Phenomena (UAP — the new term for UFO). It’s pretty crazy and clearly this UAP is some real physical thing instead of an optical effect. Here’s the full video that was shared during the House Oversight Committee’s Task Force on the Declassification of Federal Secrets.

Check it out. Here’s the full video.

Screen capture showing a US Hellfire missile colliding with UAP

This shows a US hellfire missile as it collides with the orb-like UAP as viewed from a MQ9 Reaper drone. When objects have an interaction like this, we can take a look at the momentum. Let’s start with a crash course on collisions.

Momentum and Collisions

When two objects interact (like a missile and an orb), the missile will exert a force on the orb. But because forces are an interaction between two objects, the orb also pushes back on the missile with an equal and opposite force (we call that Newton’s third law).

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Rhett Allain
Rhett Allain

Written by Rhett Allain

Physics faculty, science blogger of all things geek. Technical Consultant for CBS MacGyver and MythBusters. WIRED blogger.

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