Catching Slippery Gravity with Fast Radio Bursts
Why is the Universe’s expansion accelerating? We have no idea! But, maybe fast radio bursts can provide some clues.
Why is the Universe’s expansion accelerating? We have no idea! But, maybe fast radio bursts can provide some clues.
General relativity has stood the test of time for over a century. How can we continue to stress-test it using fast radio bursts? Today’s paper does just that!
In this summary of a classic paper from 1939, we look back at the very first theory of black hole formation: Oppenheimer and Snyder’s model of a spherically collapsing ball of dust.
Was Einstein right that experiments behave the same in deep space as in an elevator freely falling on Earth, or does the gravity in the latter case matter? Find out about an observational test in today’s guest post by Indranil Banik.
The speed of light is just a number!
What is the curvature of the Universe? Today’s authors use an exciting new probe to find out: Cosmological Clocks.