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experimental physics

Q&A

Searching the Sky for the Wobbles of Gravity

The physicist Gabriela González is on the cusp of finding the first direct evidence of gravitational waves — soundlike wobbles in space-time produced by black holes and their kin.

Physics

Dark Energy Tested on a Tabletop

Is dark energy a cosmic chameleon that can fade into its surroundings? A recent test brings the mysterious anti-gravitational force down to earth.

Boucing droplet
quantum mechanics

Fluid Tests Hint at Concrete Quantum Reality

Surprising oil drop experiments suggest that the quantum world may not be as strange as advertised.

Physics

Search Escalates for Key to Why Matter Exists

Physicists have completed a new round of searches for the answer to why matter dominates over antimatter. But the radioactive decay that would solve the puzzle is evading them.

particle physics

In Hunt for Dark Matter, Promises to Keep?

Whispers of the elusive particles are becoming stronger with a series of signals that appear to be zeroing in on a leading contender.

Physics

Perpetual Motion Test Could Amend Theory of Time

A radical theory predicting the existence of “time crystals” — perpetual motion objects that break the symmetry of time — is being put to the test.