﻿ 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 13 [2]The featured image shows what the Earth looks like at night in 2016 by featuring human-made lights. The image is a composite created from images and data taken by the Suomi NPP satellite. Please see the explanation for more detailed information. Earth at Night Image Credit: [3]NASA, [4]Suomi NPP VIIRS; Data: [5]Miguel Román ([6]NASA GSFC); Processing: [7]Joshua Stevens Explanation: This is what the [8]Earth looks like at night. Can you find your favorite [9]country or [10]city? Surprisingly, city lights make this task quite possible. Human-made [11]lights highlight particularly developed or [12]populated areas of the Earth's surface, including the seaboards of [13]Europe, the [14]eastern United States, and [15]Japan. Many large cities are located near [16]rivers or [17]oceans so that they can exchange goods cheaply by boat. Particularly [18]dark areas include the central parts of [19]South America, [20]Africa, [21]Asia, and [22]Australia. The [23]featured image, nicknamed [24]Black Marble, is actually a composite of hundreds of pictures [25]remade in 2016 from data taken by the orbiting [26]Suomi NPP [27]satellite. Tomorrow's picture: space for the heart __________________________________________________________________ [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/2202/EarthAtNight2016_SuomiNPP_13500.jpg 3. https://www.nasa.gov/ 4. https://ncc.nesdis.noaa.gov/VIIRS/ 5. https://science.gsfc.nasa.gov/sed/bio/miguel.o.roman 6. https://www.nasa.gov/goddard 7. https://earthobservatory.nasa.gov/about/joshua-stevens 8. https://earthobservatory.nasa.gov/ 9. https://www.cia.gov/the-world-factbook/countries/ 10. https://en.wikipedia.org/wiki/City 11. https://earthobservatory.nasa.gov/features/Lights 12. https://youtu.be/ki-hoy-3ea8?t=74 13. https://en.wikipedia.org/wiki/Europe 14. https://apod.nasa.gov/apod/ap160224.html 15. https://en.wikipedia.org/wiki/Japan 16. https://apod.nasa.gov/apod/ap180826.html 17. https://apod.nasa.gov/apod/ap981007.html 18. https://www.iau.org/public/themes/light_pollution/ 19. https://en.wikipedia.org/wiki/South_America 20. https://en.wikipedia.org/wiki/Africa 21. https://en.wikipedia.org/wiki/Asia 22. https://en.wikipedia.org/wiki/Australia 23. https://earthobservatory.nasa.gov/images/90008/night-light-maps-open-up-new-applications 24. https://blackmarble.gsfc.nasa.gov/ 25. https://apod.nasa.gov/apod/ap081005.html 26. https://www.nasa.gov/mission_pages/NPP/main/index.html 27. https://en.wikipedia.org/wiki/Suomi_NPP 28. https://apod.nasa.gov/apod/ap220212.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=220213 38. https://apod.nasa.gov/apod/ap220214.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/