“This is HUGE and something the Deep State does NOT want,” conspiracy theory filmmaker Jordan Sather posted on Twitter after Mr. Trump issued the surprise June 18 order for the Pentagon to start planning a Space Force.

“Understand that with the #SpaceForce, the advanced technologies (free energy, antigravity) kept in secret think-tanks within Lockheed, Boeing, & other corporate contractors will now have an avenue to be released publicly,” Mr. Sather tweeted.

Michael Salla, an author who promotes theories about secret U.S. space programs and longtime extraterrestrial presence on Earth, noted that Pentagon top brass oppose the establishment of a sixth branch of the military to patrol above the atmosphere.