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Ficheiro:NewHorizonsIo.jpg

NewHorizonsIo.jpg ‎(330 × 326 píxeis, tamanho: 24 kB, tipo MIME: image/jpeg)

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English: Image of Io taken by New Horizons on February 28, 2007.
  • This dramatic image of Io was taken by the Long Range Reconnaissance Imager (LORRI) on New Horizons at 11:04 Universal Time on February 28, 2007, just about 5 hours after the spacecraft's closest approach to Jupiter. The distance to Io was 2.5 million kilometers (1.5 million miles) and the image is centered at 85 degrees west longitude. At this distance, one LORRI pixel subtends 12 kilometers (7.4 miles) on Io.
  • This processed image provides the best view yet of the enormous 290-kilometer (180-mile) high plume from the volcano Tvashtar, in the 11 o'clock direction near Io's north pole. The plume was first seen by the Hubble Space Telescope two weeks ago and then by New Horizons on February 26; this image is clearer than the February 26 image because Io was closer to the spacecraft, the plume was more backlit by the Sun, and a longer exposure time (75 milliseconds versus 20 milliseconds) was used. Io's dayside was deliberately overexposed in this picture to image the faint plumes, and the long exposure also provided an excellent view of Io's night side, illuminated by Jupiter. The remarkable filamentary structure in the Tvashtar plume is similar to details glimpsed faintly in 1979 Voyager images of a similar plume produced by Io's volcano Pele. However, no previous image by any spacecraft has shown these mysterious structures so clearly.
  • The image also shows the much smaller symmetrical fountain of the plume, about 60 kilometers (or 40 miles) high, from the Prometheus volcano in the 9 o'clock direction. The top of a third volcanic plume, from the volcano Masubi, erupts high enough to catch the setting Sun on the night side near the bottom of the image, appearing as an irregular bright patch against Io's Jupiter-lit surface. Several Everest-sized mountains are highlighted by the setting Sun along the terminator, the line between day and night.
  • This is the last of a handful of LORRI images that New Horizons is sending "home" during its busy close encounter with Jupiter - hundreds of images and other data are being taken and stored onboard. The rest of the images will be returned to Earth over the coming weeks and months as the spacecraft speeds along to Pluto.
Data Tirada em 28 de fevereiro de 2007, 11:04 UTC
Origem http://www.nasa.gov/mission_pages/newhorizons/news/jupiter_images.html
Autor NASA
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Este(a) imagem ou vídeo foi catalogado(a) por Laboratório de Propulsão a Jato dos Estados Unidos da América para a Administração Nacional da Aeronáutica e do Espaço (NASA), sobre o código ID: PIA09248.

Esta marcação não indica o estado dos direitos de autor da obra aqui mostrada. Continua a ser necessária uma marcação normal de direitos de autor. Veja Commons:Licenciamento para mais informações.
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Public domain Este ficheiro está no domínio público nos Estados Unidos porque foi criado exclusivamente pela NASA. As orientações sobre o direito de autor da NASA são que «as obras da NASA não têm os direitos de autor protegidos salvo indicação em contrário». Veja Template:PD-USGov, as orientações sobre o direito de autor da NASA ou as normas de uso de imagens do Laboratório de Propulsão a Jato (Jet Propulsion Lab, JPL).
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atual23h36min de 22 de dezembro de 2022Miniatura da versão das 23h36min de 22 de dezembro de 2022330 × 326 (24 kB)Ras67== {{int:filedesc}} == {{Information |Description={{en|1=Image of Io taken by New Horizons on February 28, 2007. * This dramatic image of Io was taken by the Long Range Reconnaissance Imager (LORRI) on New Horizons at 11:04 Universal Time on February 28, 2007, just about 5 hours after the spacecraft's closest approach to Jupiter. The distance to Io was 2.5 million kilometers (1.5 million miles) and the image is centered at 85 degrees west longitude. At this distance, one LORRI pixel subtends...

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