A team of NASA scientists declared that the Martian ALH 84001 meteorite might contain traces of alien life.
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Jon Stewart hosted his last episode of 'The Daily Show.'
Flammable vapor caught fire at the Chevron Refinery in Richmond, California.
Portugal and the Dutch Republic signed the Treaty of The Hague.
NASA's Curiosity rover landed on Mars' Aeolis Palus plain.
The United States of America dropped its first-ever atomic bomb on the city of Hiroshima, Japan.
