How does science explain away the mysterious blips on the radar screen? Doesn't radar echo only against solid objects?
Experts know nature can trick the radar eye as readily as the human eye.
They point out the beam directed skyward can pick up natural objects on the ground.
This week the radar screen operated by the State Water Survey in Urbana, Ill., showed a "river" in the sky. It was a reflection of the Illinois river 80 miles away.
- Oakland Tribune Aug. 10, 1952
"At least some [UFO] radar reports were due to anomalous propagation - radio waves traveling curved paths due to atmospheric temperature inversions. Traditionally, they were also called radar angels: something that seems to be there but isn't. You could have simultaneous visual and radar sightings without there being any there there." - Carl Sagan, The Demon Haunted World, 1996
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