Cosmology

Hubble trouble or Superbubble? Astronomers need to escape the ‘supervoid’ to solve cosmology crisispro

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New research suggests that a troubling disparity in the rate of expansion of the universe, known as the Hubble constant, may arise from the fact Earth sits in a vast underdense region of the cosmos. The issue has come to be known as the “Hubble tension.” It arises from the fact that there are two … Read more

Cosmology is at a Crossroads, But New Instruments are Coming to Help

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Our understanding of the Universe is profound. Only a century ago, astronomers held a Great Debate to argue over whether our galaxy was an island universe, or whether nebulae such as Andromeda were galaxies in a much larger cosmos. Now we know that the Universe is billions of years old, ever expanding to billions of … Read more