When two black holes eat each other, they release a lot of energy. A lot. A significant fraction of the mass of black holes is converted into energy, which is radiated as gravitational waves, waves in the structure of space-time. These can have as much energy as, and I’m not …
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ANDYou’d think if you found the first evidence that a planet larger than Earth lurked unseen in the far reaches of our solar system, it would be a great time. It would make you one of the few people in all of history who has discovered such a thing. But …
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Eight hundred million light years from Earth, two massive cosmic objects merged after a long spiral dance, the violent burst of energy at the end literally shaking the fabric of space-time. One of these objects was a large black hole. The other was … well, something. It is unclear what: …
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