JWST Also Looked Inside the Solar System, at Jupiter and its Moons By Nancy_A
Also clearly visible at left is Europa, which is seen as a dark spot with bright edges, nd interestingly, in the infrared, Europa is bright enough to create diffraction spikes. Diffraction spikes come from the hexagonal shape of the mirror segments, diffracting the light from bright objects like stars, or in this case a nearby moon.
Left: Jupiter, center, and its moons Europa, Thebe, and Metis are seen through the James Webb Space Telescope’s NIRCam instrument 2.12 micron filter. Right: Jupiter and Europa, Thebe, and Metis are seen through NIRCam’s 3.23 micron filter. Credits: NASA, ESA, CSA, and B. Holler and J. Stansberry “What JWST will do for Jupiter’s rings is give exquisite image stability and quality, to characterize ring structure, and its sources, sinks and evolution,” said Heidi Hammel on Twitter, Hammel is a JWST interdisciplinary scientist who has early observing time on the telescope to study Jupiter.
Scientists were very eager to see these images because they are proof that JWST can observe the satellites and rings near bright solar system objects such as Jupiter, Saturn, and Mars. Some exciting upcoming observations is to use the new space telescope to look for plumes of water spewing out of moons like Europa and Saturn’s moon Enceladus. Webb may be able to see the signatures of plumes depositing material on the surface on Europa.
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