Water-bearing minerals were discovered on Mars by NASA’s Curiosity Rover.
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The portrait of Rembrandt's son, 'Titus,' was purchased at auction for $2.2 million.
Nazi German troops began the occupation of Hungary.
Zack Snyder's 'Batman v Superman: Dawn of Justice' premiered at Mexico City's Auditorio Nacional.
Wendy's became the world's second best-selling hamburger chain, overtaking Burger King.
Prince Philip of Edinburgh opened Britain's first planetarium at Madame Tussaud's in London.
