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!
Harvesting Black Holes to power a civilization
Like humanity, alien civilizations need to harvest energy. But how to power your civilization, if the energy of a star is not enough? Today’s authors discuss a fascinating prospect: Harvesting the energy of black holes with Dyson spheres.
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.
How to successfully start and run a journal club
Regularly reading papers and keeping on top of current research is a hard task for many graduate students. The solution? Start a journal club! In this bite we give you some tips on how to do that.
Measuring the curvature of the Universe with cosmic clocks
What is the curvature of the Universe? Today’s authors use an exciting new probe to find out: Cosmological Clocks.