<
https://www.sciencealert.com/glorious-new-saturn-image-jwst-has-now-captured-all-4-giant-planets>
"With the addition of Saturn, the James Webb Space Telescope has finally
captured all four of our Solar System's giant worlds.
JWST's observations of the ringed planet, taken on 25 June 2023, have been
cleaned up and processed, giving us a spectacular view of Saturn's glorious
rings, shining golden in the darkness.
By contrast, the disk of Saturn is quite dark in the new image, lacking its
characteristic bands of cloud, appearing a relatively featureless dim brown.
This is because of the wavelengths in which JWST sees the Universe – near- and
mid-infrared. These wavelengths of light are usually invisible to the naked
human eye, but they can reveal a lot.
For example, thermal emission – associated with heat – is dominated by infrared
wavelengths. When you're trying to learn about what's going on inside a planet
wrapped in thick, opaque clouds, studying its temperature is a valuable way to
go about it.
Some elements and chemical processes emit infrared light, too. So seeing the
planets of the Solar System in wavelengths outside the narrow range admitted by
our vision can tell us a lot more about what they have going on."
Via
Future Crunch:
<
https://futurecrunch.com/good-news-wash-poverty-usa-seabird-conservation/>
Share and enjoy,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
