Background
Astrophysicist Avi Loeb and Department of Defense analyst Sean Kirkpatrick coauthored this draft paper examining how standard physics constrains reported UAP behavior. They discuss friction effects that should produce bright fireballs and radar reflections, and how uncertainties in distance measurements can inflate speed estimates.
Summary
The authors consider whether small probes, possibly deployed from a larger interstellar craft, could account for some observations. They outline propulsion limits, detection methods, and compare UAP data with meteor observations. Their analysis suggests many sightings are likely misinterpreted sensor artifacts unless such physical signatures are present.