#OnThisDay in 1992: The first discoveries of extrasolar planets are announced by astronomers Alexander Wolszczan a — http://t.co/ObkVJMa7v0
April 21, 2013
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Posted on April 21 2013 by Louis Trapani in OnThisDay
#OnThisDay in 1992: The first discoveries of extrasolar planets are announced by astronomers Alexander Wolszczan a — http://t.co/ObkVJMa7v0
