Utilization of lunar materials and expertise for large scale operations in space: Abstracts
Utilization of computer generated scenes of Apollo 15 landing site
USU research helps agriculture enter the space age
US plant and radiation dosimetry experiments flown on the Soviet satellite Cosmos 1129
U.S. planetary protection program - Implementation highlights
U.S. Magellan Spacecraft that Explored Venus 1980–2020
Using the Shuttle for future advanced planetary missions
Using Lunar Module Shadows To Scale the Effects of Rocket Exhaust Plumes
Using gamma transmission to determine the shielding effectiveness of space vehicles
US Government and NASA Documents Related to Orbital Space Debris Mitigation
US experiments flown on the Soviet satellite COSMOS 936
Use of stabilized blast furnace slag in asphalt mixtures
Use of Martian resources in a Controlled Ecological Life Support System (CELSS)