... tends to be higher at extreme latitudes than at the equator. But a wise combination of shells and orbits, including several polar ones, should allow a land coverage well suited to the needs of the company providing the service. Table...
...-1 was designed to look for signs of water ice, long thought to have accumulated in the Moon’s permanently shadowed polar regions thanks to impacting comets and asteroids. The US Clementine mission, in 1994, had been the first mission...
... aircraft, horizontal launch systems can fly as far as their fuel reserves allow. The UK is well located to access polar and sun-synchronous orbits, but there is technically nothing stopping a system taking off from Cornwall and...
...group dynamics in teams in extreme, unusual environments, involving deep cavers, mountain climbers, desert survival groups, polar expeditioners, Antarctic winter-over groups and various simulations of isolated, confined environments for space. Sandra...