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 Heroes Christmas 2009 prices on Amazon.com for Planet Heroes toys have shot up for all characters. The most difficult toys to find are Voice Comm. Sun Commander and Voice Comm Tiny Asteroid. Neither of which are for sale on any internet website. The original Pluto Shiver toy is the next most difficult to find, which goes for over $50 on eBay or Amazon. The Fisher Price Website currently has Planet Heroes Voice Comm toys on sale for $7.99. The vast majority of original figures and metallic squad characters are not available from the Fisher Price Store. Planet Heroes Planet Heroes is