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SpaceX Readies for Critical 10th Test Launch of Mars Rocket

Possible Planet Is Spotted Around Neighboring Alpha Centauri Star

The Third Rock From Another Sun Shows No Signs of Life So Far

Scientists Find a Quadruple Star System in Our Cosmic Backyard

SpaceX Prepares for Critical 10th Test Launch of Mars Rocket

Uranus Was Hiding a Moon Outside Its Rings

Newly Discovered Origami Patterns Put the Bloom on the Fold

SpaceX Gets Billions From the Government. It Gives Little to Nothing Back in Taxes.

How to Watch the Strongest Meteor Shower of the Summer

James A. Lovell Jr., Commander of Apollo 13, Is Dead at 97