Hubble Measurements Confirm There's Something Weird About How the Universe Is Expanding
Gizmodo
What it took to collect these 54-million-year-old photons from a supermassive black hole
Two black holes, each about 30 times as massive as our sun orbited each other for millions of years. An instant before they collided they sent a gravitational shiver across the universe. LIGO scientist Amber L. Stuver explains. Animation by Eoin Duffy.
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