When Putin invaded Ukraine in 2022, he expected to expand Russia’s power. Three years later, he’s failed to conquer Ukraine and faces unrest at home. Widespread war fatigue, economic collapse, and ...

How did the universe come into being? There are a multitude of theories on this subject. In a Physical Review Letters paper, ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing new insight on the evolution of the universe ...

The new data seem to indicate that the cosmological constant is negative, and that the universe will end in a Big Crunch,” ...

Astronomers capture first clear image of a star’s double explosion, confirming a rare supernova theory with striking visual ...

In 1867, Lord Kelvin imagined atoms as knots in the aether. The idea was soon disproven. Atoms turned out to be something ...

Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.