Io: A Volcanic Puzzle – NASA Solar System Exploration
Nov 9, 1995 · Since Jupiter is mainly liquid and gas, the warm interior can move upwards towards the surface without volcanic activity. On 7 December 1995, Galileo will have its one and only opportunity for a close encounter with Jupiter's moon Io, the most volcanically active body in …
In Depth | Jupiter – NASA Solar System Exploration
Jupiter has 80 moons. Fifty-seven moons have been given official names by the International Astronomical Union (IAU). Another 23 moons are awaiting names. Jupiter's four largest moons – Io, Europa, Ganymede, and Callisto – were first observed by the astronomer Galileo Galilei in 1610 using an early version of the telescope.
In Depth | Europa – NASA Solar System Exploration
Europa orbits Jupiter every 3.5 days and is locked by gravity to Jupiter, so the same hemisphere of the moon always faces the planet. Jupiter takes about 4,333 Earth days (or about 12 Earth years) to orbit the Sun (a Jovian year).
10 Need-to-Know Things About Io - NASA Solar System Exploration
The moon Io is the most volcanically active world in the solar system. Io even has lakes of molten silicate lava on its surface.
In Depth | Moons – NASA Solar System Exploration
Jupiter's menagerie of moons includes the largest in the solar system (Ganymede), an ocean moon (Europa) and a volcanic moon (Io). Many of Jupiter's outer moons have highly elliptical orbits and orbit backwards (opposite to the spin of the planet).
First Ultraviolet Imaging Spectrograph (UVIS) Spectral Images of …
Oct 19, 2000 · way to Saturn started observations of the planet Jupiter. The first data from the Ultraviolet Imaging Spectrograph (UVIS) clearly show the planet's aurora and a glowing ring of gas ejected from Jupiter's moon Io. This donut of atoms is known as the Io torus. Our pictures are the first published imaging spectroscopy
Io Observer - NASA Solar System Exploration
Oct 1, 2024 · The Jovian moon Io is likely the most geologically active body in the solar system, offering insight into tidal heating, volcanic processes, and other phenomena. However, its location within Jupiter''s radiation belt presents significant engineering challenges that must be addressed to enable future missions to Io.
Future Io Exploration for 2013-2022 and Beyond, Part 1: …
This white paper (revised draft) summarizes the current scientific questions regarding Jupiter''s volcanic moon Io, and the scientific objectives and measurements that need to be accomplished by future exploration.
10 Need-to-Know Things About Jupiter - NASA Solar System …
Jupiter cannot support life as we know it. But some of Jupiter's moons have oceans beneath their crusts that might support life.
Io By the Numbers – NASA Solar System Exploration
Oct 1, 2024 · The outer or uppermost part of a planet, moon, asteroid, comet or other body. The gravitational acceleration experienced at its surface at the equator. The speed needed for an object to break away from the gravitational pull of a planet or moon. The numbers displayed here are approximations.