Related topics: galaxies · dark energy · big bang · dark matter · black holes

How fast is the universe expanding? Galaxies provide one answer.

Determining how rapidly the universe is expanding is key to understanding our cosmic fate, but with more precise data has come a conundrum: Estimates based on measurements within our local universe don't agree with extrapolations ...

Why does matter exist? Roundness of electrons may hold clues

In the first moments of our universe, countless numbers of protons, neutrons and electrons formed alongside their antimatter counterparts. As the universe expanded and cooled, almost all these matter and antimatter particles ...

Cosmic bursts unveil universe's missing matter

Astronomers have used mysterious fast radio bursts to solve a decades-old mystery of "missing matter," long predicted to exist in the universe, but never before detected. The researchers have determined that all of the unaccounted ...

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