S85-26475 (1 February 1985) --- Astronaut David Griggs, 51-D mission specialist, monitors the behavior of a pink plastic flipping toy, nicknamed "Rat Stuff." The small toy is part of the "Toys in Space" project for NASA's 51-D mission.

A back view of the Lunar Electric Rover (LER) during the Desert Research and Technology Studies (RATS) remote field test at Black Point Lava Flow, Arizona in 2008. Two Mark III spacesuits are visibly mounted on the LER suit port.

A front view of the Lunar Electric Rover (LER) during the Desert Research and Technology Studies (RATS) remote field test at Black Point Lava Flow, Arizona in 2008.

KENNEDY SPACE CENTER, Fla. -- At SPACEHAB in Cape Canaveral, Fla., members of the STS-107 crew pose outside of the Double Module, one of the mission payloads. From left to right are Mission Specialist David Brown, Commander Rick D. Husband, Pilot William "Willie" McCool and Payload Specialist Ilan Ramon, from Israel. A research mission, the mission will be the first flight of the Double Module and will also carry a Hitchhiker payload. The experiments range from material sciences to life sciences (many rats). The Hitchhiker carrier system is modular and expandable in accordance with payload requirements. Hitchhiker experiments are housed in canisters or attached to mounting plates. The Hitchhiker canister comes in two varieties--the Hitchhiker Motorized Door Canister and the Sealed Canisters

KENNEDY SPACE CENTER, Fla. -- At SPACEHAB in Cape Canaveral, Fla., members of the STS-107 crew pose outside of the Double Module, one of the mission payloads. From left to right are Mission Specialist David Brown, Commander Rick D. Husband, Pilot William 'Willie' McCool and Payload Specialist Ilan Ramon, from Israel. A research mission, the mission will be the first flight of the Double Module and will also carry a Hitchhiker payload. The experiments range from material sciences to life sciences (many rats). The Hitchhiker carrier system is modular and expandable in accordance with payload requirements. Hitchhiker experiments are housed in canisters or attached to mounting plates. The Hitchhiker canister comes in two varieties--the Hitchhiker Motorized Door Canister and the Sealed Canisters