![]() IceCube looks for the rare neutrinos that collide with our atmosphere, creating a cascade of charged particles. We've only recently begun to find astrophysical neutrinos using the IceCube Neutrino Observatory, which consists of more than 5,000 sensors set beneath the Antarctic ice. Neutrinos are particularly ghost-like, making them difficult to detect. It also hosts an exotic ecosystem of speeding charged particles known as cosmic rays, tangled magnetic fields, and teeny-tiny neutral particles called neutrinos. Our galaxy is home to asteroids, planets, stars, and dusty, star-forming clouds. National Science Foundation (Lily Le & Shawn Johnson) / ESO (S. Neutrinos Paint Picture of the Milky Way This portrait of the Milky Way combines visible light and neutrino emissions (in blue). Research studies on these data will be forthcoming. Read more about this image in the JWST press release. The fainter G and E rings are subjects of deeper exposures not shown in Webb's recent press release. This image was taken as part of a program to investigate the Saturn system, including its rings and its moons. Likewise, the surprising brightening at the limb suggests that methane also emits light ( fluoresces) at high altitudes. The darkness of the north pole is somewhat unexpected, though. However, it does show expected seasonal differences between the northern and southern hemispheres the northern hemisphere is experiencing summertime, while the southern hemisphere is emerging from darkness at the end of a winter. The methane-absorbing wavelength doesn't pick up the stripes typical to Saturn photographs, which come from layering deeper inside the atmosphere. The icy rings, however, are unpolluted by methane and therefore remain bright. This near-infrared James Webb Space Telescope (JWST) image of the Saturn system sheds light on the objects' composition: Saturn is dark in this image because methane in its upper atmosphere absorbs infrared light at a wavelength of 3.23 microns. In this monochrome image, NIRCam filter F323N (3.23 microns) was color mapped with an orange hue. Saturn's Ringshine JWST's near-infrared camera captured this image of Saturn and some of its moons on June 25, 2023.
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