Hubble's images have helped to pin down the age of the universe, which the expansion rate of pulsating stars suggests is some 13 billion to 14 billion years. Hubble has also captured images of ...
Legendary Active Galaxy Contains a Monster Black Hole Amateur astronomers can observe an extraordinary celestial object known as 3C 273, the most distant target visible through a standard backyard ...
We showed in a 2020 paper that this could solve the Hubble tension and explain the galaxy number counts, provided our patch of the universe is about 20% less dense than average out to a billion ...