Jupiter was discovered to be a source of high speed dust particles by the Ulysses spacecraft in 1992. These dust particles originate from the volcanic plumes on Io. They collect electrostatic charges from the plasma environment, gain energy from the co-rotating electric field of the magnetosphere, and leave Jupiter with escape speeds over 200 kms. The dust streams were also observed by the Gali...

It has been argued in a number of recent papers that dark matter is in the form of Jupiter mass primordial black holes which betray their presence by microlensing quasars. This lensing accounts for a number of characteristic properties of quasar light curves, in both single quasars and gravitationally lensed multiple systems, which are not explained on the basis of intrinsic variation. One pred...

This paper describes a suite of metrics that we use to evaluate our JUPITER system which provides worldwide weather information over the telephone. Since May, 1997, we have made the system available to the general public via a toll-free number and have collected approximately 35,000 utterances to date. These data have proven invaluable for system development and evaluation. Because JUPITER make...

The Dust Detector System onboard Galileo records dust impacts in the Jupiter system. Impact events are classified into four quality classes. Class 3 – our highest quality class – has always been noise-free and, therefore, contains only true dust impacts. Depending on the noise environment, class 2 are dust impacts or noise. Within 20 R J from Jupiter (Jupiter radius, R J = 71, 492 km) class 2 s...

[1] Large sprite discharges at high atmospheric altitudes have been found to be physically similar to small streamer discharges in air at sea level density. Based on this understanding, we investigate possible sprite discharges on Venus or Jupiter‐like planets through laboratory experiments on streamers in appropriate CO2‐N2 and H2‐He mixtures. First, the scaling laws are experimentally confirm...

In the inner solar system, the planets' orbits evolve chaotically, driven primarily by secular chaos. Mercury has a particularly chaotic orbit and is in danger of being lost within a few billion years. Just as secular chaos is reorganizing the solar system today, so it has likely helped organize it in the past. We suggest that extrasolar planetary systems are also organized to a large extent by...