Curiosity rover lands on Mars, cracks wise

Mars Science Laboratory (MSL) Entry, Descent and Landing Engineer Steltzner reacts after the Curiosity rover successfully landed on Mars, at the Jet Propulsion Laboratory in Pasadena Credit: REUTERS/Handout

The successful landing of the rover Curiosity on Mars was reason for rejoicing - and for joking, meme-ing and photoshopping.

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