The April Fools Paper Review Process – 2023
There is a tradition in Astronomy to post silly science papers to the arXiv on Aprils Fools day. We’ve collected them all for 2023 and provided some “peer review”
Meet the AAS Keynote Speakers: Dr. John C Mather
Today we interview Nobel Laureate and Senior Project Scientist of JWST , Dr. John C Mather, for his plenary talk at #AAS241!
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!
Solving the Hubble tension might require more than changing the early Universe
One of the most important issues in cosmology is the Hubble tension – why do different probes not agree on how fast the Universe is expanding? A popular solution is changing the physics in the very early Universe. Today’s paper explores, why this approach might not work, by measuring the expansion rate with observables independent of the early Universe.
H0 tension: South Pole-arization edition with SPT-3G
Today’s paper takes us on a journey to the South Pole for the latest episode in the H0 tension mystery. Can ΛCDM model extensions finally crack the case?
Dragging Along Dark Matter
As the universe’s temperatures drop, there is a type of dark matter that can freeze-in. There is one consequence: it’s a bit of a drag.