Vulcans' unique physiology means their blood appears green instead of red, like humans in the Star Trek franchise.

In 1966 a television show called Star Trek made its debut, introducing fans of the show to a character named Spock, who hailed from a planet named Vulcan, which orbited a star called 40 Eridani A.

Vulcan is best known today as the fictional birthplace of the stoic Mr. Spock on "Star Trek," but for more than half a century it was considered a real planet that orbited between Mercury and the Sun.

"Vulcan certification adds launch capacity, resiliency and flexibility needed by our nation's most critical space-based systems." The U.S. Space Force has certified United Launch Alliance's (ULA ...