Determining the nature of dark matter, the invisible substance that makes up most of the mass in our universe, is one of the greatest puzzles in physics. New results from the world’s most sensitive ...

Determining the nature of dark matter, the invisible substance that makes up most of the mass in our universe, is one of the greatest puzzles in ...

Could black holes help explain the origins of high-energy cosmic radiation? The universe is filled with many forms of radiation and particles that can be detected here on Earth. Among them are photons ...

This article explores how our understanding of the universe has evolved—from the scale of everyday experience down to the Planck length ...

In the 1920s, Radithor promised to cure everything from wrinkles to leukemia, but its unintended results were deadly.