Electrons inside a diamond have given a floating, centimeter-sized device a quantum nudge, opening a new path toward testing ...

A collision may have left these galaxies without dark matter. That spells trouble for alternative gravity theories.

Imagine finding out you have 100 soulmates in high school—and if you don’t make every single one of them happy, they’ll die.

At the Met, a landmark exhibition doesn’t just show that the painters were equals. It makes it impossible to imagine their art existing without their marriage.