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38 pounds artist Average distance axis Barry Bruce billions of stars Bonnie Blastoff Bonnie weighed 1oo Centauri CERE Charon Connie & Bonnie Connie and Bonnie constellations craters currently lives deep outer degrees F Doug's Early astronomers Earth days Diameter Earth hours Length elliptical orbit farthest galaxy gases GEMINI giant group of stars helium hike hydrogen Jim Todd Jupiter Kelly kind of stars largest asteroid largest moon Length of day Light travels light-years looks lunar Mercury miles Number Milky million miles Diameter million miles Length Museum of Science Nelson Neptune Number of moons Nuss orbit the Earth Oregon Museum outer space party planets that rotate Pluto Ray's rotate backwards rotate clockwise satellite to orbit Saturn Science and Industry shape side facing six trillion solar system spacecraft spinning star called surface temperature thick three planets twins Uranus Venus volcanoes VOSTOK wei^h wei?h weighed 100 weighed 1oo pounds