There are times and places in the universe that experiments cannot reach, and may never be able to reach. What exactly goes on inside black holes, and what happened in the first fractions of a second ...

For decades scientists have been trying to solve Feynman's Sprinkler Problem: How does a sprinkler running in reverse—in which the water flows into the device rather than out of it—work? Through a ...

Scientists investigate the strange behavior of viscoelastic fluids in a series of specially designed experiments. Viscoelastic fluids are everywhere, whether racing through your veins or through 1,300 ...

Physical-collapse theories have long offered a natural solution to the central mystery of the quantum world. But a series of increasingly precise experiments are making them untenable. How does ...