Cosmology

# Carl Friedrich Gauss was born on 13 April 1777. # He was a German mathematician but his work included number theory, statistics, analysis, differential equation, geodesy, geophysics,mechanics, electrostatics, magnetic fields, matrix theory, optics and astronomy. # His mother even did not know his birth date but he solved this puzzle by comparing his date with Easter date. # He is consider a best mathematician of all time and hence has a influential mathematician in history of mankind. # He died on 23 February 1855 but still  is a legend of all time.