Space Shuttle Discovery is a retired American Space Shuttle orbiter. The spaceplane was one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first mission, STS-41-D, flew from August 30 to September 5, 1984. Over 27 years of service it launched and landed 39 times, aggregating more spaceflights than any other spacecraft as of December 2024. The Space Shuttle launch vehicle had three main components: the Space Shuttle orbiter, a single-use central fuel tank, and two reusable solid rocket boosters. Nearly 25,000 heat-resistant tiles cover the orbiter to protect it from high temperatures on re-entry.
Space Shuttle Discovery launches on STS-39, the first unclassified shuttle mission for the United States Department of Defense.
On April 28, in the year 1991, Space Shuttle Discovery launches on STS-39, the first unclassified shuttle mission for the United States Department of Defense. This event is recorded as a Historical Events event in the history of April 28, one of 389 recorded events on this date across all of history.
Key Facts
- This event took place on April 28, 1991 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 3 Wikipedia articles.
- Wikipedia source last updated on 13 April 2026.
On This Date in History 389
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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