Scientist ready to 'weigh' distant stars

Cambridge, Mass. (UPI) Oct 15, 2010 ![][1] Determining the weight of a distant star usually yields just an estimate, but one U.S. scientist says in special cases a star can be “weighed” directly. Astronomers have found more than 90 planets that cross in front of, or transit, their stars, and by measuring the amount of starlight that’s blocked, they can calculate how big the planet is relative to the star. But they can’t know exa



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