A timeline of the solar system etched into a concrete sidewalk. Included are drawings of the planets depicting their positions; the traveling time of sunlight to the planets and the revolutions of the ...
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When did our solar system's planets form? Discovery of tiny meteorite may challenge the timeline
A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...
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