Why Would Planet Nine Be So Hard to See?

How could a large, distant planet escape our telescopes? Sunlight has to reach it, reflect, and travel all the way back to us. Explore why searching the outer Solar System is so difficult. Watch the full Planet Nine investigation on ASTROLECT. Subscribe for more space mysteries. VISUAL CREDITS & SOURCES ESO/José Francisco Salgado (josefrancisco.org): https://www.eso.org/public/videos/lasillatimelapseesompg/ https://www.eso.org/public/videos/insidevlt1timelapse/ ESO/B. Tafreshi: https://www.eso.org/public/videos/uhd_bt_paranal_10_aux/ ESA/Hubble, M. Kornmesser: https://esahubble.org/videos/heic2021c/ The planet’s appearance is an artistic concept, not an actual photograph or a confirmed discovery. NASA/JHUAPL (Johns Hopkins Applied Physics Lab): https://svs.gsfc.nasa.gov/11952/ NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Lunar and Planetary Institute: https://science.nasa.gov/photojournal/soaring-over-pluto/ https://science.nasa.gov/photojournal/soaring-over-charon/ ESO and ESA/Hubble material: Creative Commons Attribution 4.0 International. https://creativecommons.org/licenses/by/4.0/ https://www.eso.org/public/outreach/copyright/ https://esahubble.org/copyright/ Changes: excerpts trimmed, cropped, resized, speed-adjusted, mildly graded, muted and captioned. Visual playback speeds are illustrative. Original editing, captions and sound mix: ASTROLECT. #PlanetNine #SolarSystem #Astronomy