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. 2022 February 4 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Moons at Twilight Image Credit & [3]Copyright: [4]Robert Fedez Explanation: [5]Even though Jupiter was the only planet visible in the evening sky on February 2, it [6]shared the twilight above the western horizon with the Solar System's [7]brightest moons. In a single exposure made just after sunset, the Solar System's ruling gas giant is at the upper right in this telephoto field-of-view from Cancun, Mexico. The snapshot also captures our fair planet's own natural satellite in its young crescent phase. The Moon's disk looms large, its [8]familiar face illuminated mostly by [9]earthshine. But the four points of light lined-up with Jupiter are Jupiter's own large [10]Galilean moons. Top to bottom are Ganymede, [Jupiter], Io, Europa, and Callisto. Ganymede, Io, and Callisto are physically larger than Earth's Moon while [11]water world Europa is only slightly smaller. Tomorrow's picture: light-weekend __________________________________________________________________ [12]< | [13]Archive | [14]Submissions | [15]Index | [16]Search | [17]Calendar | [18]RSS | [19]Education | [20]About APOD | [21]Discuss | [22]> __________________________________________________________________ Authors & editors: [23]Robert Nemiroff ([24]MTU) & [25]Jerry Bonnell ([26]UMCP) NASA Official: Phillip Newman [27]Specific rights apply. [28]NASA Web Privacy Policy and Important Notices A service of: [29]ASD at [30]NASA / [31]GSFC & [32]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2202/IMG_1869Fedez.png 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.facebook.com/RobertFedezPhoto/ 5. https://www.nasa.gov/jupiter 6. https://earthsky.org/tonight/moon-and-jupiter-feb2-2022-pm/ 7. https://earthsky.org/astronomy-essentials/what-are-the-brightest-objects-in-our-solar-system/ 8. https://apod.nasa.gov/apod/ap220122.html 9. https://apod.nasa.gov/apod/ap211016.html 10. https://www.nasa.gov/feature/410-years-ago-galileo-discovers-jupiter-s-moons 11. https://www.nasa.gov/europa 12. https://apod.nasa.gov/apod/ap220203.html 13. https://apod.nasa.gov/apod/archivepix.html 14. https://apod.nasa.gov/apod/lib/apsubmit2015.html 15. https://apod.nasa.gov/apod/lib/aptree.html 16. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 17. https://apod.nasa.gov/apod/calendar/allyears.html 18. https://apod.nasa.gov/apod.rss 19. https://apod.nasa.gov/apod/lib/edlinks.html 20. https://apod.nasa.gov/apod/lib/about_apod.html 21. http://asterisk.apod.com/discuss_apod.php?date=220204 22. https://apod.nasa.gov/apod/ap220205.html 23. http://www.phy.mtu.edu/faculty/Nemiroff.html 24. http://www.phy.mtu.edu/ 25. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 26. http://www.astro.umd.edu/ 27. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 28. https://www.nasa.gov/about/highlights/HP_Privacy.html 29. https://astrophysics.gsfc.nasa.gov/ 30. https://www.nasa.gov/ 31. https://www.nasa.gov/centers/goddard/ 32. http://www.mtu.edu/