Search results
Results from the WOW.Com Content Network
Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter, and in the Solar System. Despite being the only moon in the Solar System with a substantial magnetic field , it is the largest Solar System object without a substantial atmosphere.
The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass). Callisto is only slightly smaller than Mercury in size; the smaller ones, Io and Europa, are about the size of the Moon. The three inner moons — Io, Europa, and Ganymede — are in a 4:2:1 orbital resonance with
A slight attenuation of the signal before and after the occultation showed that Io had an ionosphere, suggesting the presence of a thin atmosphere with a pressure of 1.0 × 10 −7 bar, though the composition was not determined. [33] This was the second atmosphere to be discovered around a moon of an outer planet, after Saturn's moon Titan.
The problem was that while the atmospheric probe was light enough to launch with the two-stage IUS, the Jupiter orbiter was too heavy to do so, even with a gravity assist from Mars, so the three-stage IUS was still required. [34] [33] By late 1980, the price tag for the IUS had risen to $506 million (equivalent to $1.714 billion in 2023). [20]
The Juno probe will make flybys of three of Jupiter's moons thanks to a mission extension.
A radio-science experiment analyzed Ganymede's gravitational field and internal structure. The instruments detected evidence of a self-generated magnetosphere around the moon. G2 260 (161) 6 September 1996 A Ganymede gravity-assist put Galileo into coplanar orbit with other Galilean satellites, permitting subsequent encounters with them. A ...
The system was discovered in the citizen science project Exoplanet Explorers, using K2 data. [57] K2-138 could host co-orbital bodies (in a 1:1 mean-motion resonance). [58] Resonant chain systems can stabilize co-orbital bodies [59] and a dedicated analysis of the K2 light curve and radial-velocity from HARPS might reveal them. [58]
Io (/ ˈ aɪ. oʊ /), or Jupiter I, is the innermost and second-smallest of the four Galilean moons of the planet Jupiter.Slightly larger than Earth's moon, Io is the fourth-largest moon in the Solar System, has the highest density of any moon, the strongest surface gravity of any moon, and the lowest amount of water by atomic ratio of any known astronomical object in the Solar System.