Since the first \emph{in-situ} measurements of the altitude profile of upper atmospheric density and composition carried out by the Viking lander missions during 1976, similar data were continuously ...

Mercury’s exosphere, a tenuous envelope where collisions between particles are rare, offers unique insights into surface–space interactions and the dynamic processes that govern atmospheric evolution.

NASA scientists have released new findings about the moon’s tenuous exosphere – the thin layer of gas surrounding the moon that is one 25-trillionth the density of Earth’s atmosphere. The data reveal, ...

ANN ARBOR, Mich.---By measuring the charged particles in the planet Mercury's magnetic field, a University of Michigan sensor enabled the first observations about the surface and atmospheric ...

Moon Dust: Unlike Earth and other major celestial bodies in the solar system, the Moon doesn't have a significant atmosphere or magnetic field. However, Earth's satellite has a very thin layer of dust ...