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astronomy
February 29, 2016
James Hetrick
Leap Day: Fixing the Faults in Our Stars
How we came up with this bizarre system, and why we need it.
February 11, 2016
Gwyneth Kelly
The sound of two black holes colliding a billion light-years away is “a fleeting chirp.”
January 20, 2016
Sasha Belenky
Astronomer who killed Pluto says he’s discovered a new planet to make up for it.
October 26, 2015
Lisa Randall
How Dark Matter Gave Shape to the Universe
The mysterious particles may have indirectly paved the way for humanity—and killed the dinosaurs

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