Type II Supernovae are H0t on the Trail
Type Ia supernovae’s dimmer cousin, type II supernovae, take a shot at measuring the Hubble constant.
Early Dark Energy to the Rescue
Tensions are rising with the beloved lambda-CDM model of the Universe. Is it time for Early Dark Energy to swoop in to save the day?
I’m Not Late, You’re Just Early: measuring the Hubble constant using time-delay cosmography
How can we use gravitational lensing to measure the expansion rate of the Universe?
Standard Siren Updates from the Latest LIGO-Virgo Gravitational-Wave Catalog
The latest LIGO-Virgo catalog presents a new set of ‘standard siren’ events that can be used to study the cosmic history of our universe. Read more…
Turning on the Lights – Simulated Modeling of the Sources of Cosmic Reionization
Today’s paper investigates whether it really matters how stars and galaxies cause cosmic reionization.
A-void-ing the CMB cold spot
The cold spot is a strange feature in the CMB that has puzzled astronomers for years. Today’s authors use gravitational lensing to find at least a partial cause: A giant supervoid extending 1.8 billion light years!