Astronomy Picture of the Day
    


APOD: 2023 October 23 ┴ Moon Io from Spacecraft Juno
<< Yesterday 22.10.2023 Tomorrow >>
APOD: 2023 October 23 ┴ Moon Io from Spacecraft Juno
Credit & Copyright: NASA, JPL-Caltech, SwRI, MSSS; Processing & Copyright: Ted Stryk & Fernando Garc÷a 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 was erupting -- with its faint plume visible near the top of the featured image. Studying Io's volcanoes and plumes helps humanity better understand how Jupiter's complex system of moons, rings, and auroras interact. Juno is scheduled to make two flybys of Io during the coming months that are almost 10 times closer: one in December and another in February 2024.

Help Wanted: Professional-astronomer level guest writers and assistant editors for APOD

January
February
March
April
May
June
July
August
September
October
November
December
 < October 2023  >
Mo Tu We Th Fr Sa Su






1
2345678
9101112131415
16171819202122
23242526272829
3031




Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: Io
Publications with words: Io
See also:
All publications on this topic >>