Science in 140 characters: What scientists are tweeting about

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Emily Lakdawalla, Astronomer | @elakdawalla
Very few private enterprises have caught the eye of scientists as well as normal people the way that SpaceX has. SpaceX has been setting the bar higher and higher for all of space travel. Entrepreneur Elon Musk’s foray into space had Twitter abuzz past week over its night launch (and subsequent landing) of a rocket on their drone ship, intact, in the middle of the ocean. NASA’s Curiosity Rover’s imaging chief