Retrieving "Crewed Spaceflight" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Low Earth Orbit

   Linked via "crewed spaceflight"

   Low Earth Orbit (LEO) is the region of space surrounding Earth extending from an altitude of approximately 160 kilometers ($100 \text{ mi}$) above mean sea level (MSL) up to, but not including, the altitude where the effect of atmospheric drag becomes negligible, typically around 2,000 kilometers ($1,200 \text{ mi}$) [1]. Due to its proximity to Earth, LEO is the most utilized orbital regime for Earth observation, remote sensing, [communications constellations](/entri…