An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course. When ...
Parenting Patch on MSN
Cartoons About Space That Teach Kids With Real Science
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Wayne N White Jr consults with One Space Technologies Inc. He is a member and former Director of The National Space Society and an Associate Fellow of AIAA. Private citizens and companies may one day ...
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