Jupiter and Ring in Infrared from Webb

APOD: 2022 July 20 - Jupiter and Ring in Infrared from Webb

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2022 July 20
The featured image shows Jupiter in infrared light as captured
by the James Webb Space Telescope. Visible are clouds, the Great
Red Spot -- appearing light in color -- and a prominent ring around
the giant planet.
Please see the explanation for more detailed information.

Jupiter and Ring in Infrared from Webb
Image Credit: NASA, ESA, CSA, STScI; Processing & License: Judy Schmidt

Explanation: Why does Jupiter have rings? Jupiter's main ring was discovered in 1979 by NASA's passing Voyager 1 spacecraft, but its origin was then a mystery. Data from NASA's Galileo spacecraft that orbited Jupiter from 1995 to 2003, however, confirmed the hypothesis that this ring was created by meteoroid impacts on small nearby moons. As a small meteoroid strikes tiny Metis, for example, it will bore into the moon, vaporize, and explode dirt and dust off into a Jovian orbit. The featured image of Jupiter in infrared light by the James Webb Space Telescope shows not only Jupiter and its clouds, but this ring as well. Also visible is Jupiter's Great Red Spot (GRS) -- in comparatively light color on the right, Jupiter's large moon Europa -- in the center of diffraction spikes on the left, and Europa's shadow -- next to the GRS. Several features in the image are not yet well understood, including the seemingly separated cloud layer on Jupiter's right limb.

Stay Informed

When you subscribe to the blog, we will send you an e-mail when there are new updates on the site so you wouldn't miss them.

Messier 10 and Comet
Pleiades over Half Dome