¿ Astronomy Picture of the Day [1]Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2020 June 28 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Europa and Jupiter from Voyager 1 Image Credit: [3]NASA, [4]Voyager 1, [5]JPL, Caltech; Processing & [6]License: [7]Alexis Tranchandon / [8]Solaris Explanation: What are those spots on Jupiter? Largest and furthest, just right of center, is the [9]Great Red Spot -- a huge [10]storm system that has been raging on [11]Jupiter possibly since [12]Giovanni Cassini's likely notation of it [13]355 years ago. It is not yet known why this [14]Great Spot is red. The spot toward the lower left is one of Jupiter's largest moons: [15]Europa. Images from [16]Voyager in 1979 bolster the modern hypothesis that [17]Europa has an underground ocean and is therefore a good place to [18]look for extraterrestrial life. But what about the dark spot on the upper right? That is a shadow of another of Jupiter's large moons: [19]Io. Voyager 1 discovered [20]Io to be so volcanic that no [21]impact craters could be found. Sixteen frames from [22]Voyager 1's flyby of Jupiter in 1979 were recently reprocessed and merged to create the [23]featured image. About 43 years ago, [24]Voyager 1 launched from Earth and started one of the [25]greatest explorations of the [26]Solar System ever. Free Download: [27]Voyager Posters Tomorrow's picture: double sky trees __________________________________________________________________ [28]< | [29]Archive | [30]Submissions | [31]Index | [32]Search | [33]Calendar | [34]RSS | [35]Education | [36]About APOD | [37]Discuss | [38]> __________________________________________________________________ Authors & editors: [39]Robert Nemiroff ([40]MTU) & [41]Jerry Bonnell ([42]UMCP) NASA Official: Phillip Newman [43]Specific rights apply. [44]NASA Web Privacy Policy and Important Notices A service of: [45]ASD at [46]NASA / [47]GSFC & [48]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2006/EuropaJupiter_Voyager_2792.jpg 3. https://www.nasa.gov/ 4. https://voyager.jpl.nasa.gov/ 5. https://www.jpl.nasa.gov/ 6. https://creativecommons.org/licenses/by-nc-sa/2.0/ 7. mailto:%20alexis.tranchandoni%20@at@%20gmail%20.dot.%20com 8. https://www.flickr.com/photos/alex-is-solaris/ 9. https://en.wikipedia.org/wiki/Great_Red_Spot 10. https://apod.nasa.gov/apod/ap140518.html 11. https://solarsystem.nasa.gov/planets/jupiter/overview/ 12. https://en.wikipedia.org/wiki/Giovanni_Domenico_Cassini 13. https://en.wikipedia.org/wiki/1665 14. https://www.nasa.gov/feature/goddard/jupiter-s-great-red-spot-a-swirling-mystery 15. https://en.wikipedia.org/wiki/Europa_(moon) 16. https://apod.nasa.gov/apod/ap031120.html 17. https://solarsystem.nasa.gov/moons/jupiter-moons/europa/overview/ 18. https://apod.nasa.gov/debate/debate100th.html 19. https://solarsystem.nasa.gov/moons/jupiter-moons/io/overview/ 20. https://apod.nasa.gov/apod/ap140330.html 21. https://apod.nasa.gov/apod/ap141021.html 22. https://voyager.jpl.nasa.gov/ 23. https://www.flickr.com/photos/alex-is-solaris/29919234526/in/dateposted-public/ 24. https://www.youtube.com/watch?v=xs-gJs1CKBY 25. https://apod.nasa.gov/apod/ap170902.html 26. https://apod.nasa.gov/apod/ap170211.html 27. https://voyager.jpl.nasa.gov/downloads/ 28. https://apod.nasa.gov/apod/ap200627.html 29. https://apod.nasa.gov/apod/archivepix.html 30. https://apod.nasa.gov/apod/lib/apsubmit2015.html 31. https://apod.nasa.gov/apod/lib/aptree.html 32. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 33. https://apod.nasa.gov/apod/calendar/allyears.html 34. https://apod.nasa.gov/apod.rss 35. https://apod.nasa.gov/apod/lib/edlinks.html 36. https://apod.nasa.gov/apod/lib/about_apod.html 37. http://asterisk.apod.com/discuss_apod.php?date=200628 38. https://apod.nasa.gov/apod/ap200629.html 39. http://www.phy.mtu.edu/faculty/Nemiroff.html 40. http://www.phy.mtu.edu/ 41. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 42. http://www.astro.umd.edu/ 43. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 44. https://www.nasa.gov/about/highlights/HP_Privacy.html 45. https://astrophysics.gsfc.nasa.gov/ 46. https://www.nasa.gov/ 47. https://www.nasa.gov/centers/goddard/ 48. http://www.mtu.edu/