200521y ago
Milestone
Deep Impact comet collision
NASA's Deep Impact mission slammed a copper projectile into Comet Tempel 1, excavating subsurface material so the mothership could analyse a comet's interior.
07·04
On This Day in Space
4 July
Anniversaries
2
Year range
1997 – 2005
Source
Curated
CategoriesMilestone1Landing1
Timeline · newest first
199729y ago
Landing
Pathfinder lands on Mars
The first successful Mars lander since Viking in 1976, Pathfinder delivered the rover Sojourner — a proof of concept that opened the era of Martian surface exploration.