朱诺航天器的木卫一影像

朱诺航天器的木卫一影像

ByNASA中文

2023年10月23日 Moon Io from Spacecraft Juno Image Credit: NASA, JPL-Caltech, SwRI, MSSS; Processing & Copyright: Ted Stryk & Fernando García Navarro Explanation: There goes another one! Volcanoes on Jupiter‘s moon Io keep erupting. To investigate, NASA‘s robotic Juno spacecraft has begun a series of visits to this very strange moon. Io is about the size of Earth’s moon, but because of gravitational flexing by Jupiter and other moons, Io’s interior gets heated and its surface has become covered with volcanoes. The featured image is from last week’s flyby, passing within 12,000 kilometers above the dangerously active world. The surface of Io is covered with sulfur and frozen sulfur dioxide, making it appear yellow, orange and brown. As hoped, Juno flew by just as a volcano…

木卫一的真实色彩

木卫一的真实色彩

ByNASA中文

2022年12月11日 Io in True Color Image Credit: NASA, JPL, Galileo Project Explanation: The strangest moon in the Solar System is bright yellow. The featured picture, an attempt to show how Io would appear in the “true colors” perceptible to the average human eye, was taken in 1999 July by the Galileo spacecraft that orbited Jupiter from 1995 to 2003. Io’s colors derive from sulfur and molten silicate rock. The unusual surface of Io is kept very young by its system of active volcanoes. The intense tidal gravity of Jupiter stretches Io and damps wobbles caused by Jupiter’s other Galilean moons. The resulting friction greatly heats Io’s interior, causing molten rock to explode through the surface. Io’s volcanoes are so active that they are effectively turning…

朱诺号影像：木卫一的影子

朱诺号影像：木卫一的影子

ByGotthew

2019 October 7 Io Eclipse Shadow on Jupiter from Juno Image Credit & License: NASA/JPL-Caltech/SwRI/MSSS; Processing: Kevin M. Gill Explanation: What’s that dark spot on Jupiter? It’s the shadow of Jupiter’s most volcanic moon Io. Since Jupiter shines predominantly by reflected sunlight, anything that blocks that light leaves a shadow. If you could somehow be in that shadow, you would see a total eclipse of the Sun by Io. Io’s shadow is about 3600 kilometers across, roughly the same size as Io itself — and only slightly larger than Earth’s Moon. The featured image was taken last month by NASA’s robotic Juno spacecraft currently orbiting Jupiter. About every two months, Juno swoops close by Jupiter, takes a lot of data and snaps a series of…