COLORADO SPRINGS–Thirteen years ago a 20-m asteroid streaked without warning into Earth’s atmosphere before exploding over the Russian city of Chelyabinsk, injuring 1,500 peop ...
A 10-year-old’s passion for Pluto has caught the attention of NASA thanks to a compelling, viral letter on social media. NASA now says it is "looking into" reclassifying Pluto as a planet. If that ...
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