Chief Warrant Officer 4 Thomas John Hennen is a United States Army warrant officer and NASA payload specialist astronaut who flew aboard Space Shuttle mission STS-44 as a payload specialist.
Featuring our global Launch Tracker, interactive Astronaut Database, and Stations Dashboard.
Stay on top of everything leaving Earth; get mission info, countdowns, livestreams, and customized notifications that alert you when a rocket is launching or when a space station is in the skies overhead.