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. 2024 January 26 [2]See Explanation. Clicking on the picture will download the highest resolution version available. Epsilon Tauri: Star with Planet Image Credit & [3]Copyright: [4]Reg Pratt Explanation: [5]Epsilon Tauri lies 146 light-years away. A K-type [6]red giant star, epsilon Tau is cooler than the Sun, but with about 13 times the solar radius it has nearly 100 times the solar luminosity. A member of the [7]Hyades open star cluster the giant star is known by the [8]proper name Ain, and along with brighter giant star Aldebaran, forms the eyes of Taurus the Bull. Surrounded by dusty, dark clouds in Taurus, epsilon Tau is also known to have a planet. Discovered by [9]radial velocity measurements in 2006, [10]Epsilon Tauri b is a gas giant planet larger than Jupiter with an orbital period of 1.6 years. And though the exoplanet can't be seen directly, on a dark night its parent star epsilon Tauri is easily visible to the unaided eye. Tomorrow's picture: light-weekend __________________________________________________________________ [11]< | [12]Archive | [13]Submissions | [14]Index | [15]Search | [16]Calendar | [17]RSS | [18]Education | [19]About APOD | [20]Discuss | [21]> __________________________________________________________________ Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell ([25]UMCP) NASA Official: Amber Straughn [26]Specific rights apply. [27]NASA Web Privacy Policy and Important Notices A service of: [28]ASD at [29]NASA / [30]GSFC, [31]NASA Science Activation & [32]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2401/Ain_4096.jpg 3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 4. https://www.r3gdigital.com/ 5. http://stars.astro.illinois.edu/sow/ain.html 6. https://en.wikipedia.org/wiki/Red_giant 7. https://apod.nasa.gov/apod/ap121224.html 8. https://en.wikipedia.org/wiki/List_of_proper_names_of_stars 9. https://exoplanets.nasa.gov/alien-worlds/ways-to-find-a-planet/#/1 10. https://exoplanets.nasa.gov/exoplanet-catalog/7044/epsilon-tauri-b/ 11. https://apod.nasa.gov/apod/ap240125.html 12. https://apod.nasa.gov/apod/archivepix.html 13. https://apod.nasa.gov/apod/lib/apsubmit2015.html 14. https://apod.nasa.gov/apod/lib/aptree.html 15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 16. https://apod.nasa.gov/apod/calendar/allyears.html 17. https://apod.nasa.gov/apod.rss 18. https://apod.nasa.gov/apod/lib/edlinks.html 19. https://apod.nasa.gov/apod/lib/about_apod.html 20. http://asterisk.apod.com/discuss_apod.php?date=240126 21. https://apod.nasa.gov/apod/ap240127.html 22. http://www.phy.mtu.edu/faculty/Nemiroff.html 23. http://www.phy.mtu.edu/ 24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 25. http://www.astro.umd.edu/ 26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 27. https://www.nasa.gov/about/highlights/HP_Privacy.html 28. https://astrophysics.gsfc.nasa.gov/ 29. https://www.nasa.gov/ 30. https://www.nasa.gov/centers/goddard/ 31. https://science.nasa.gov/learners 32. http://www.mtu.edu/