Planet smallest known planet is PSR B1257+12A, one of the first extrasolar planets discovered, which was found in 1992 in orbit around a pulsar. Its mass is roughly half that of the planet Mercury. The smallest known planet orbiting a main-sequence star other than the Sun is Kepler-37b, with a mass (and radius) slightly higher than that of the Moon. Every planet began its existence in an entirely fluid state; in early formation, the denser, heavier materials sank to the centre, leaving the lighter materials near the surface. Each therefore has a differentiated interior consisting of a dense planetary core surrounded
Planet Tolex April 1954. It was also aired on CBLT Toronto on the following Fridays at 5:00 p.m., except during 19 March to 9 April 1954 when it was rescheduled to 5:30 p.m. while school broadcasts were aired at 5:00 p.m. Planet Tolex Planet Tolex is a Canadian children's science fiction television series which aired on CBC Television from 1953 to 1954. The fictional Planet Tolex of the series title was located in the Solar System, orbiting so that it was always opposite to the Earth, always causing its sightline with Tolex to be blocked by the Sun. The series' puppet-based characters