Space History Explorer
This Day in Space History
Today is June 25 — discover what happened on this date in the history of space exploration.
1992Shuttle
STS-50 microgravity research
Space Shuttle Columbia launched on STS-50, carrying the US Microgravity Laboratory for materials and fluid physics research.
2014Discovery
Rosetta observes comet activity
Rosetta began detecting increasing activity from comet 67P as it approached the Sun, with jets of dust and gas becoming visible.
Data sourced from NASA, ESA, and other space agencies. Events are curated highlights — not exhaustive.