Astronomers may have finally uncovered new Planet 9 evidence — a massive, unseen world lurking far beyond Neptune. The planet was detected in two infrared sky surveys taken 23 years apart, where a faint moving dot shifted just enough to suggest something extraordinary. If confirmed, it could be larger than Neptune and orbit the Sun at a distance 700 times greater than Earth.
In this video, we explore the full story behind this solar system mystery — how scientists connected decades of sky data, what makes Planet 9 so controversial, and why it could redefine our understanding of the outer solar system. Stay tuned as we break down what astronomers believe might be the most important space discovery of the decade. Credit:
Planet Nine: by nagualdesign CC BY 3.0 https://creativecommons.org/licenses/by/3.0/deed.en https://commons.wikimedia.org/wiki/File:Planet_Nine_animation.ogv
Infrared Astronomical Satellite Launches: by NASA/JPL https://commons.wikimedia.org/wiki/File:Infrared_Astronomical_Satellite_Launches.webm
Seeking Infrared Light: by Sophia Roberts, Michael McClare, Robert Andreoli, John Caldwell / NASA's Goddard Space Flight Center https://images.nasa.gov/details/Seeking_Infrared_Light_H264
WFIRST's Wide Field Instrument: by Scott Wiessinger, Claire Saravia, Krystofer Kim, Ashley Balzer / NASA's Goddard Space Flight Center https://images.nasa.gov/details/GSFC_20190626_WFIRST_m13235_WideField_60
The Little Satellite: by Matthew R. Radcliff, Kasha Patel / NASA's Goddard Space Flight Center https://images.nasa.gov/details/GSFC_20170330_EO1_m12559_Decommission
Fornax Galaxy Cluster: by NASA / JPL-Caltech / UCLA https://images.nasa.gov/details/PIA12835
History of our Solar System: by NASA https://images.nasa.gov/details/298_MU69
B-Roll 9: by Matthew R. Radcliff, Jane Peterson, Jefferson Beck, Ellen T. Gray / NASA's Goddard Space Flight Center https://images.nasa.gov/details/GSFC_20160913_ORACLES_m12372_broll09
Orion Big Head: by NASA / JPL-Caltech / UCLA https://images.nasa.gov/details/PIA14040
KSC-06-S-00125: by NASA or National Aeronautics and Space Administration https://images.nasa.gov/details/van_042806_cc_calsep
NASA Student Airborne Research: by NASA’s Armstrong Flight Research Center https://images.nasa.gov/details/AFRC-2023-14011-01
Gravitational and Space Research: by NASA Glenn Research Center's Imaging Technology Center https://images.nasa.gov/details/GRC-2022-CM-0101.2
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