Ripples of the Early Universe as a Chronicle of Its Birth
The Universe was born in the Big Bang and almost instantly passed through a phase of inflation — an ultra-fast expansion that blew up microscopic regions to cosmological scales.
Supernova Echoes: A Fresh Measure of the Hubble Constant
Throughout the last century, cosmology measured the universe's expansion rate using supernovae, redshifts, and the cosmic microwave background.