Exoplanets with substantial hydrogen/helium atmospheres have been discovered in
abundance, many residing extremely close to their parent stars. The extreme irradiation …

▪ Abstract In most space environments, dust particles are exposed to plasmas and UV
radiation and, consequently, carry electrostatic charges. Their motion is influenced by …

Photoionization heating from ultraviolet (UV) radiation incidents on the atmospheres of hot
Jupiters may drive planetary mass loss. Observations of stellar Lyman-α (Lyα) absorption …

One-dimensional aeronomical calculations of the atmospheric structure of extra-solar giant
planets in orbits with semi-major axes from 0.01 to 0.1 AU show that the thermospheres are …

SINCE their detection in the high latitudes of Jupiter, first by the Voyager Ultraviolet
Spectrometer (UVS) experiment1, 2, then by the International Ultraviolet Explorer (IDE) …

ZEOLITES (microporous aluminosilicates) and related molecular sieves have found wide
application as catalysts, sorbents and ion-exchange materials. New zeolites with large pores …

The detections of atomic hydrogen, heavy atoms and ions surrounding the extrasolar giant
planet (EGP) HD209458b constrain the composition, temperature and density profiles in its …

Hydrodynamic escape is an important process in the formation and evolution of planetary
atmospheres. Transonic steady state solutions of the time-independent hydrodynamic …

Jupiter's upper atmosphere is considerably hotter than expected from the amount of sunlight
that it receives,–. Processes that couple the magnetosphere to the atmosphere give rise to …

We study the survival of gas planets around stars with masses in the range 1-5 M☉, as
these stars evolve off the main sequence. We show that planets with masses smaller than …