Captain Kirk, Iron Man, Sesame Street's Slimey the Worm, and a Tyrannosaurus Rex are set to lift off to space later this week on the first test flight of Orion, NASA's next-generation spacecraft.

This eclectic 'crew' flying aboard NASA's unmanned Orion Exploration Flight Test-1 (EFT-1) areamong the souvenirs and mementos packedfor the four-hour, two-orbit mission. The Orion capsule with its cargo of sensors, instruments, and memorabilia is scheduled to launch Thursday (Dec. 4) at 7:05 a.m. EST (1205 GMT) on board a United Launch Alliance (ULA) Delta 4 Heavy rocket from Cape Canaveral Air Force Station in Florida.

The mementos, which include a Star Trek action figure, a Marvel challenge coin, a Muppet, a dinosaur fossil, and an Apollo lunar spacesuit part, were collected for the flight by Lockheed Martin, NASA's prime contractor for Orion and the company responsible for the EFT-1 mission. [NASA's Orion Spacecraft Test Flight: Full Coverage]

The toys and artifacts packed aboard the Orion continue a long tradition dating back to the early days of U.S. human spaceflight, when astronauts carried small trinkets for their families, friends, and organizations that helped make their mission possible.

The Orion isNASA's first crewed space capsulesince the Apollo command module. It is designed to take astronauts farther into the solar system than ever before. The EFT-1 mission will test systems that are critical to future human missions to an asteroid and ultimately to Mars.

During the flight, the Orion will fly 15 times farther out than the International Space Station before plummeting back to Earth to test its heat shield at speeds nearing what it would experience if it was returning from the moon. After re-entry, the Orion will deploy parachutes and then splash down in the Pacific Ocean, where it will be recovered by the Navy. [How NASA's 1st Orion Test Flight Works in Pictures]

To raise public awareness about EFT-1, Lockheed worked with the Entertainment Industries Council (EIC) to recruit items from science fiction-related celebrities to fly onboard Orion.

"A noted space enthusiast, William Shatner is thrilled to send Kirk back to space and support Orion, while inspiring future generations about space travel," EIC vice president Skylar Jackson told collectSPACE.

Shatner provided his "Captain Kirk in Environmental Suit" collector's edition action figure to symbolize his iconic role on "Star Trek."

Director Jon Favreau offered an "Iron Man" challenge coin to represent engineering, technology and flight.

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NASA to launch Muppet paraphernalia into space