We can never anticipate the unseen good or evil that may come upon us suddenly out of space. But, as name implies, in most cases is not identified, whether as spacecraft or normal phenomenon. These are what active scientists work to explain. However, anomalistic phenomena are usually not even established as real. Lately, many reports of human abductions by aliens.
Extraordinary claims demand extraordinary evidence.
Most others have insufficient information to identify. Not a single convincing case in 50 years. Last modified 9 April 1999 by rwo Back to the list of study guides Back to the ASTR 121, Sec. All rights reserved. These notes are intended for the private, noncommercial use of students enrolled in Astronomy 121 at the University of Virginia.