﻿ 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 August 14 IFRAME: [2]https://www.youtube.com/embed/aiFD_LBx2nM?rel=0 4000 Exoplanets Video Credit: [3]SYSTEM Sounds ([4]M. Russo, [5]A. Santaguida); Data: [6]NASA Exoplanet Archive Explanation: Over 4000 planets are now known to exist outside our Solar System. Known as [7]exoplanets, this milestone was passed last month, as recorded by [8]NASA's Exoplanet Archive. The [9]featured video highlights these exoplanets in sound and light, starting chronologically from the first confirmed detection in 1992 and continuing into 2019. The entire night sky is first [10]shown compressed with the [11]central band of our [12]Milky Way Galaxy making a giant U. [13]Exoplanets detected by slight jiggles in their parents-star's colors ([14]radial velocity) appear in pink, while those detected by slight dips in their parent star's brightness ([15]transit) are shown in purple. Further, those exoplanets [16]imaged directly appear in orange, while those detected by [17]gravitationally magnifying the light of a background star ([18]microlensing) are shown in green. The faster a planet orbits its parent star, the higher the accompanying [19]tone played. The [20]retired [21]Kepler satellite has discovered [22]about half of these first 4000 exoplanets in just one region of the sky, while the [23]TESS mission is on track to find even more, all over the sky, orbiting the [24]brightest nearby stars. Finding [25]exoplanets not only helps humanity to better understand the potential [26]prevalence of life elsewhere in the universe, but also how our [27]Earth and [28]Solar System were formed. Tomorrow's picture: wall of stars __________________________________________________________________ [29]< | [30]Archive | [31]Submissions | [32]Index | [33]Search | [34]Calendar | [35]RSS | [36]Education | [37]About APOD | [38]Discuss | [39]> __________________________________________________________________ Authors & editors: [40]Robert Nemiroff ([41]MTU) & [42]Jerry Bonnell ([43]UMCP) NASA Official: Phillip Newman [44]Specific rights apply. [45]NASA Web Privacy Policy and Important Notices A service of: [46]ASD at [47]NASA / [48]GSFC, [49]NASA Science Activation & [50]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://www.youtube.com/embed/aiFD_LBx2nM?rel=0 3. https://www.system-sounds.com/ 4. https://www.astromattrusso.com/ 5. https://www.system-sounds.com/about-2/ 6. https://exoplanetarchive.ipac.caltech.edu/ 7. https://exoplanets.nasa.gov/what-is-an-exoplanet/about-exoplanets/ 8. https://exoplanetarchive.ipac.caltech.edu/ 9. https://www.youtube.com/watch?v=EAUwsXSENA4 10. https://www.youtube.com/watch?v=SjkWi9pf0dM 11. https://apod.nasa.gov/apod/ap180418.html 12. https://imagine.gsfc.nasa.gov/science/objects/milkyway1.html 13. https://www.planetary.org/explore/space-topics/exoplanets/how-to-search-for-exoplanets.html 14. https://www.planetary.org/explore/space-topics/exoplanets/radial-velocity.html 15. https://www.planetary.org/explore/space-topics/exoplanets/transit-photometry.html 16. https://www.planetary.org/explore/space-topics/exoplanets/direct-imaging.html 17. https://apod.nasa.gov/apod/ap220705.html 18. https://www.planetary.org/explore/space-topics/exoplanets/microlensing.html 19. https://www.onlinepianist.com/virtual-piano 20. https://www.jpl.nasa.gov/news/news.php?feature=7272 21. https://www.nasa.gov/mission_pages/kepler/overview/index.html 22. https://exoplanetarchive.ipac.caltech.edu/docs/counts_detail.html 23. https://www.nasa.gov/content/about-tess 24. https://apod.nasa.gov/apod/ap190625.html 25. https://en.wikipedia.org/wiki/Exoplanet 26. https://exoplanets.nasa.gov/what-is-an-exoplanet/how-do-we-find-life/ 27. https://apod.nasa.gov/apod/ap070325.html 28. https://solarsystem.nasa.gov/solar-system/our-solar-system/in-depth/ 29. https://apod.nasa.gov/apod/ap220813.html 30. https://apod.nasa.gov/apod/archivepix.html 31. https://apod.nasa.gov/apod/lib/apsubmit2015.html 32. https://apod.nasa.gov/apod/lib/aptree.html 33. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 34. https://apod.nasa.gov/apod/calendar/allyears.html 35. https://apod.nasa.gov/apod.rss 36. https://apod.nasa.gov/apod/lib/edlinks.html 37. https://apod.nasa.gov/apod/lib/about_apod.html 38. http://asterisk.apod.com/discuss_apod.php?date=220814 39. https://apod.nasa.gov/apod/ap220815.html 40. http://www.phy.mtu.edu/faculty/Nemiroff.html 41. http://www.phy.mtu.edu/ 42. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 43. http://www.astro.umd.edu/ 44. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 45. https://www.nasa.gov/about/highlights/HP_Privacy.html 46. https://astrophysics.gsfc.nasa.gov/ 47. https://www.nasa.gov/ 48. https://www.nasa.gov/centers/goddard/ 49. https://science.nasa.gov/learners 50. http://www.mtu.edu/