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How Is Cell Death Essential to Life?
...like, they basically make pores. And so they release these perforin proteins that make holes in the membranes of the target cell. And that will trigger either an apoptotic response...
It Might Be Possible to Detect Gravitons After All
...(LIGO) to first sense a rumble in space-time in 2015 — one sent out by a collision between distant black holes. Detecting a single graviton would be harder still, akin...
How Do Merging Supermassive Black Holes Pass the Final Parsec?
...by merging supermassive black holes in their final days. “With LISA we will actually see supermassive black holes merging,” Pacucci said. The nature of that signal could reveal “particular traits...
The ‘Beautiful Confusion’ of the First Billion Years Comes Into View
...filled with black holes formed in this way. But cosmologists have struggled to understand supermassive black holes. These black holes somehow grew large enough, and fast enough, to shape the...
Physicists Reveal a Quantum Geometry That Exists Outside of Space and Time
...quantum theory. (Note that these singularities are unrelated to the singularities thought to sit at the heart of black holes.) Singularities led Arkani-Hamed to the amplituhedron and associahedron in the...
If the Universe Is a Hologram, This Long-Forgotten Math Could Decode It
...fabric can’t be the whole story. Dying stars puncture it, creating intensely warped regions called black holes where the equations of general relativity break down. And even in calmer parts...
The #1 Clue to Quantum Gravity Sits on the Surfaces of Black Holes
...law of thermodynamics. That is, unless the black hole’s swelling surface area meant that its own entropy was increasing to make up the difference. The black hole’s area should therefore...
The Two Faces of Space-Time
...in the real universe, too. “The whole game of understanding quantum gravity is to figure out how all of this bulk physics, the interior of black holes, is mapped into...
The Logic That Must Lie Behind a New Physics
...We have these two conflicting pictures: quantum theory and general relativity. They’re saying different things about the world. So we want some coherence. But the places [like inside black holes...