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NASA's Curiosity rover touched down on Mars early Monday morning, setting off a worldwide celebration.


NASA's Curiosity Rover Lands Safely on Mars

Video: NASA Lands Car-Sized Rover Near Martian Mountain

Curiosity Targets Gale Crater

Mars Party of the Decade Reaches Fever Pitch

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Black holes have the size and mass to devour entire stars, although this has never been observed--until now.


Satellites Watch Stellar Death Throes

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Scientists are beginning to understand how thunder clouds produce powerful gamma rays--and antimatter.


Thunderclouds Make Gamma Rays—and Shoot Out Antimatter, Too [Preview]

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Early in the morning on August 12th, you'll be able to see the Perseid meteor shower, named for the constellation Perseus.


August Perseid Meteor Shower Has Long Legacy, Bright Future

Perseid Meteor Shower Weather Forecast

EarthSky’s Meteor Shower Guide for 2012

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NASA recently granted three companies 1.1 billion dollars to develop private space taxis, which will ferry astronauts to and from low-Earth orbit.


NASA Chooses SpaceX to Return US Astronauts to Space

NASA Awards $1.1 Billion in Support for 3 Private Space Taxis

NASA Press Release