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Hubble tension
Hubble's Law: The Equation Behind Cosmic Expansion
Hubble's law is the observation that distant galaxies move away from Earth at speeds proportional to their distance.
Cosmic Microwave Background: The First Light Ever Released
The cosmic microwave background is thermal radiation released 380,000 years after the Big Bang, the oldest light observable in any direction.
The Silence Between Black Holes
Black holes are colliding in silence across the cosmos. That silence could help explain cosmic expansion.
Dark Energy Is Weakening. Three Experiments Now Agree.
Three independent experiments – DESI, the Dark Energy Survey, and the South Pole Telescope – now all point the same way: dark energy...
Ancient Sound Waves Reveal Cosmic Void Around Earth
Sound waves from the Big Bang support the idea that Earth sits inside a billion-light-year void, potentially resolving cosmology's most stubborn measurement problem.
