Air Force's mystery space plane completes 2-year mission

CAPE CANAVERAL, Fla. - The Air Force's mystery space plane is back on Earth, following a record-breaking two-year mission.

Continue Reading Below

The X-37B landed at NASA's Kennedy Space Center in Florida early Sunday. The Air Force is mum about what the plane did in orbit after launching aboard a SpaceX rocket in 2017. The 780-day mission sets a new endurance record for the reusable test vehicle.

It looks like a space shuttle but is one-fourth the size at 29 feet.

HOW MUCH DOES A TICKET TO SPACE COST?

Officials say this latest mission successfully completed its objectives. Experiments from the Air Force Research Laboratory were aboard.

GET FOX BUSINESS ON THE GO BY CLICKING HERE

This was the fifth spaceflight by a vehicle of this sort. No. 6 is planned next year with another launch from Cape Canaveral. According to Air Force Secretary Barbara Barrett, "Each successive mission advances our nation's space capabilities."

NEIL DEGRASSE TYSON: WE NEED TO DEFEND AGAINST ROGUE ASTEROIDS