File:Jupiter's Moon, Io, In Ultraviolet Light (1992-24-77).jpg
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[edit]DescriptionJupiter's Moon, Io, In Ultraviolet Light (1992-24-77).jpg |
English: This is a Hubble Space Telescope image of the geologically active trailing hemisphere of the Jovian moon lo. The ultraviolet light image as taken with the European Space Agency's Faint Object Camera on March 15, 1992, when lo was 414 million miles from Earth. No larger than Earth's moon, lo is so far away it is at the resolution limit of ground-based telescopes, so surface features cannot be distinguished. HST resolves features as small as 150 miles across. This level of detail is only surpassed by the Voyager probes which flew within several hundred thousand miles of lo in 1979. lo's surface looks remarkably different in ultraviolet light than it does in visible light. Regions which look bright in visible light are dark in UV. The most likely explanation is that large areas of lo are covered with a sulfur dioxide frost. Because sulfur dioxide is a strong absorber of UV radiation, sulfur dioxide-rich areas are dark in the UV though they are bright in visible light. Technical Information: lo north is 123 degrees and east 33 degrees counterclockwise from the top of the print. The diameter of the satellite is 1 .l arc seconds equivalent to a diameter of 2170 miles. Resolution is 22 milliarcsec picture elements (pixels) corresponding to 43 miles per pixel on lo's surface. |
Date | 2 October 1992 (upload date) |
Source | Jupiter's Moon, Io, In Ultraviolet Light |
Author | Credit: Francesco Paresce (ESA/ STScI) Paola Sartoretti, University of Padova |
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[edit]Public domainPublic domainfalsefalse |
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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current | 19:58, 7 February 2024 | 2,689 × 2,389 (261 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://stsci-opo.org/STScI-01EVTB4E6YG6KJEP4EHZXSTDVA.jpg via Commons:Spacemedia |
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