Planet X Discovered?? + Challenge Winners!

Will there be 9 planets again? Get your own Space Time t-shirt at Tweet at us! @pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: Help translate our videos! Some funky orbits near the Kuiper Belt are hinting towards a brand new planet, the elusive ‘Planet X.’ Our friends Mike Brown and Konstantin Batygin of Caltech are working hard to finally spot the potential gas giant through powerful telescopes, and the odds are looking extremely promising! We will keep you posted on any updates here on Space Time. FURTHER READING FROM CALTECH: _____________________ PHOTON CLOCK CHALLENGE ANSWER: A photon clock moving towards you at half the speed of light would appear to tick FASTER that a clock moving away from you at the same speed. PHOTON CLOCK CHALLENGE WINNERS: Benjamin Clark Emma May Lizzie (digitelanimefan) EXTRA CREDIT WINNERS: Marcin (Borobej) Peđa Čačić Raphaël Viguier FURTHER READING: Relativistic Doppler Effect: _____________________ COMMENTS: Jono Storm Vlad Tchompalov AFastidiousCuber ______________________ Written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com)