Former CNES chief Yves Sillard publishes a book on UAP

When

Yves Sillard, a former director-general of France's space agency CNES, published a 2007 book on unidentified aerospace phenomena. He told a regional daily the extraterrestrial idea should be weighed seriously and objectively but remained only a hypothesis.

Sources

  1. PressInterview with Yves Sillard (Midi Libre, 19 August 2007) (opens in a new tab)Midi Libre (transcribed by Patrick Gross) / 2007-08-19

How sources are chosen and tiered

Where it fits

See it on the timelineMore in Government