4 Years On, a New Experiment Sees No Sign of ‘Cosmic Dawn’
Astronomers tried to confirm a signal from the birth of the first stars after the Big Bang. They saw nothing. ..
Astronomers tried to confirm a signal from the birth of the first stars after the Big Bang. They saw nothing. ..
A powerful astronomy instrument called DESI charts millions of galaxies in the night sky. Can it help scientists finally figure out what dark energy is? ..
After decades of hard work and controversies, NASA scientists ready Hubble’s massive successor for its mission to probe the distant universe. ..
Years of conflicting measurements have led physicists to propose a “dark sector” of invisible particles that could explain dark matter and the universe’s ..
The concept of a dimension seems simple enough, but mathematicians struggled for centuries to precisely define and understand it. ..
Observing the secrets of the universe’s “Dark Ages” will require capturing ua-long radio wavelengths—and we can’t do that on Earth. ..