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Physics4021 articles archived since 1845

Warm in the Sun

A Sunny Activity from Science Buddies

July 12, 2018 — Science Buddies and Sabine de Brabandere

How Does the Quantum World Cross Over?

The universe according to quantum mechanics is strange and probabilistic, but our everyday reality seems nailed down. New experiments aim to probe where—and why—one realm passes into the other

June 19, 2018 — Tim Folger

Jupiter Crackles with Polar Lightning

Juno spacecraft data suggest lightning on Jupiter is much more common than we thought—but it congregates near the poles, not the equator as on Earth. Christopher Intagliata reports. 

June 17, 2018 — Christopher Intagliata

What Is Spacetime?

Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like?

May 24, 2018 — George Musser

What Is Dark Matter?

An elusive substance that permeates the universe exerts many detectable gravitational influences yet eludes direct detection

May 23, 2018 — Lisa Randall