A Dec. 24, 2014 (EST) timelapse of Io transiting Jupiter. Credit: IKYLSP/Reddit
“I wish I had been able to go on for longer but Jupiter went behind the house just before the transit ended. The transit is 102 frames (306 captures in total, RGB separate). Seeing was rather poor and a small amount of dew formed resulting in reduced brightness and contrast in some parts of the GIF,” wrote Reddit user IKYLSP.
“Something rather interesting with this one is the brief appearance of Ganymede from behind the planet’s shadow just before it’s eclipsed by the planet. If you zoom in you can actually see it as a half-moon shape which is really awesome.”
Jupiter’s moon Europa passes in front of Io in this picture captured from the Gemini North observatory on Dec. 16, 2014. Credit: Gemini Observatory
Observations of Jupiter’s volcanically active moon Io, obtained that night as part of a program led by Katherine de Kleer of UC Berkeley to watch for volcanic outbursts, revealed an unusual event involving Io and another large jovian moon, Europa. According to de Kleer, the images captured an occultation event in which Europa briefly blocked some of the light from Io, “…giving Io a very un-Io-like appearance!” These sorts of events occur when we observe the moons’ orbits edge-on, and can occasionally view the moons passing in front of one another.And below you can see individual frames from the eclipse.
Jupiter’s Europa passes in front of fellow moon Io in this sequence of images taken from the Gemini North observatory Dec. 16, 2014. Credit: Gemini Observatory
About Elizabeth Howell
Elizabeth Howell is the senior writer at Universe Today. She also works for Space.com, Space Exploration Network, the NASA Lunar Science Institute, NASA Astrobiology Magazine and LiveScience, among others. Career highlights include watching three shuttle launches, and going on a two-week simulated Mars expedition in rural Utah. You can follow her on Twitter @howellspace or contact her at her website.- FASHION WEEK - USA Fashion and Music News
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