Astronautics Vocabulary

The Astronautics Vocabulary is a glossary of terms that pertain to the science and technology of spaceflight. This alphabetical list can be navigated by clicking on the letters A-Z displayed on this page.

• Ultraviolet Auroral Imager (UVAI)
• ultraviolet imager (UVI)
• ultraviolet radiation
• umbilical
• Umbilical Mating Assembly (UMA)
• undocking
• Universal Docking Module (UDM)
• universal time (UT)
• Universe
• upper body
• US Lab Mock-up
• useful life