Unidentified aerial phenomenon with absence of sound
A phenomenon observed passing overhead at approximately 8-10 miles altitude with no accompanying sound, which Dr. LaPaz found incomprehensible and for which confirming sound evidence was desperately sought but not obtained.
“Your statement of' the absence of sound when this thing has gone apparently overhead at the distance of 10 miles, within earshot ot people.... That seems 1ncomprehens1ble, doesn't 1t, Dr. Teller? I'm glad to hear you say that because that has been my teellng tram the begimu.ns. And we tried desperately to get confirming evidence ,menever sounds were men .. tioned. No reports ~ve been obtained.”
Verbatim from DOE-UAP-D004.pdf · View original on war.gov
Case details
- Date exactness
- Not exact
- Sensors
- eyewitness
- Altitude
- 52800 ft
Resolution
Absence of sound when object passed overhead at 8-10 miles altitude remains unexplained and puzzling
Source document
Quote checked against the original file.
This sighting
unspecified / undated
- DOE-UAP-D004.pdf — Written report of this sighting