Space Exploration Giant NASA science balloon completes trip around the world in 16 days. ... a region of charged particles, stretches up to the border between Earth and space.

A popular saying about the view of planet Earth from orbit — that the international borders between countries aren't visible — is a myth, says astronaut John Grunsfeld.

Designed for high-resolution Earth observation, the satellite will strengthen India's surveillance capabilities, especially along borders and coasts. The mission highlights India's growing space ...

NASA's GOLD mission, flying to space Jan. 25 attached to a communications satellite, will examine the boundary between Earth and space.