Spacecraft
哈勃空间望远镜
Hubble Space Telescope
An optical telescope launched in 1990, still operating.
It orbits near 540 km and shows up around magnitude 1–2.
Related terms
- Reaction control system — Small thrusters that point a spacecraft.
- Docking — Two spacecraft joining in orbit.
- Spacewalk — A crew member working outside in vacuum.
- Life support — The system keeping air, water and temperature livable.