As of the 1990s, scientists did not know that there were any exoplanets, or planets beyond our own solar system.

Authors

• Person: Not available Organization: WBUR
  UFOs and the U.S. government: The push towards greater ... - WBUR

Sources

• UFOs and the U.S. government: The push towards greater ... - WBUR www.wbur.org WBUR via serper

Referenced by nodes (1)

• exoplanets concept