Sunny Vagnozzi

Adding a second type of early dark energy helps resolve a stubborn mismatch: the universe's expansion rate measured today versus the rate inferred from the Big Bang's afterglow. The two-ingredient model narrows the gap and fits the afterglow's fine details, hinting that the early universe was more i

Just after the Big Bang, the universe was a hot particle soup. Neutrinos, escaping from it, were supposed to cool down to 1.96 degrees above absolute zero. New research shows that tiny clumps in that plasma, as they faded, cooled the neutrino background a bit more. The PTOLEMY experiment will try, f