(AU) to more than 100 AU), with the small terrestrial planets grouped near the Sun, the giant planets grouped outside, and several populations of small bodies distributed throughout this range of distances; (2) the diversity of its secondary systems, with their host of regular satellites ...
As H I atoms absorb the Lyα photons coming from the Sun, the solar radiation is blocked during the transit of the planet in front of the star. Despite the difficulty of mapping this region through Lyα measurements from distances far from the Earth’s surface, and the problematic presence...
Bursts of Jovian electrons in the energy range 330 MeV have been detected to distances of the order of 1 AU from the planet. The duration of each burst was about 23 days, and the maximum intensity increased with increasing distance from the sun. These events could not be correlated with kn...
Superrotation is a dynamical regime where the atmosphere circulates around the planet in the direction of planetary rotation with excess angular momentum in the equatorial region. Superrotation is known to exist in the atmospheres of Venus, Titan, Jupiter, and Saturn in the solar system. Some of...
The presence of interplanetary dust at long distances from the Sun has been confirmed by the measurements obtained by several spacecrafts. As on Earth, the flux of interplanetary meteoroids can affect the ionospheric structure of other planets. The elec- tron density of many planets show multiple ...
The orbital periods of Comets Encke, Halley, and Hale-Bopp are 3.3 years, 76 years, and 2530 years, respectively. a) What are the semimajor axes (in astronomical units) of the orbits of these comets? b) Assuming negligible perihelion distances, what are t ...
Safe Planetary Distances: Exploring the Limits of Orbital Stability Just curious as to how someone may determine what orbital distances are "safe" or "stable" for planetary interactions? or How close could two planetary bodies get before the gravity interaction destroys one or the other? i.e....
because the positively charged particles are pushed outside by the electric force that already dominates at lowradial distances. Thus most protons of the distribution (not only the suprathermal ones) contribute to the flux escaping in the solar wind. That is why the presence of suprathermal elect...
Optical angle fractional precision varies with distance but, for a relatively close object at 10 lunar distances, is on the order of 10−8, decreasing linearly in precision with distance. Doppler and delay measurements were obtained for these FRAs, and were combined with ground-based optical ...
Abstract Atmosphere escape is observed in the solar system for a variety of objects, including the sun all the way down to Pluto. It should, therefore, come as no surprise that planets orbiting other stars may exhibit similar phenomena, providing an opportunity to explore the effects of atmosphe...