Kepler Telescope Discovers New Planets

Planet-hunting is not exactly a growth industry in our solar system. The last time we spotted a new world orbiting our sun was in 1930, when amateur astronomer Clyde Tombaugh discovered Pluto—which wore the planet designation only until 2006, when it was busted down to a mere dwarf planet. Last January, astronomers from Caltech announced they had evidence of a new Planet Nine, but while it may well be out there, no one's seen it yet.