Reliable news for an expanding universe
Signal hints at possible interactions between ordinary hydrogen and dark matter in the early universe, but some scientists remain skeptical.
About 100 years ago Henrietta Swan Leavitt helped prove the existence of other galaxies. She is still inspiring astronomers today (infographic).
The gigantic celestial body has exploded multiple times, confounding scientists.
The signal, from two merging black holes 3 billion light-years away, is the most distant observation yet.
Theoretical physicists contemplate the seemingly impossible situation of a point in space-time where gravity goes to infinity.
New simulations suggests life could exist in universes very different from our own.
A team of scientists develop a model that describes the accelerating expansion of the universe without the need for mysterious dark energy.
Scientists reveal plans for future experiments to study the faint remnants left behind by the Big Bang.
"Deep learning" finds telltale arcs of light that indicate massive objects.
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