Building a stellar time machine

(PhysOrg.com) -- Harvard researchers are building a celestial time machine that lets astronomers look back at hundreds of thousands of objects in the Earth’s skies over the past century.

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<p><a href="http://www.physorg.com/news166197904.html">Building a stellar time machine</a></p> <p>(PhysOrg.com) -- Harvard researchers are building a celestial time machine that lets astronomers look back at hundreds of thousands of objects in the Earth’s skies over the past century.</p>