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1,231 published items.

What Is a Geomagnetic Storm?
Space science

What Is a Geomagnetic Storm?

A geomagnetic storm is a prolonged disturbance of Earth's magnetosphere caused by enhanced energy transfer from the solar wind. The most significant storms are often ass…

September 11, 2026
How Do Scientists Forecast Auroras?
Space science

How Do Scientists Forecast Auroras?

Aurora forecasts combine measurements of the Sun and solar wind with models of Earth's magnetosphere. Scientists are not predicting a fixed light show at a precise stree…

September 11, 2026
What Is a Tokamak?
Discover science

What Is a Tokamak?

A tokamak is a doughnut-shaped magnetic-confinement device designed to hold extremely hot plasma using strong magnetic fields so controlled nuclear fusion reactions can…

September 11, 2026
How Does a Fusion Reactor Work?
Discover science

How Does a Fusion Reactor Work?

A fusion reactor aims to create a hot plasma in which light nuclei fuse, confine or compress that plasma long enough to release useful energy, then capture the energy in…

September 11, 2026
What Is the Higgs Boson?
Discover science

What Is the Higgs Boson?

The Higgs boson is the quantum excitation of the Higgs field, a field that fills space and is central to how elementary particles acquire mass in the Standard Model.

September 11, 2026
What Is the Standard Model of Particle Physics?
Discover science

What Is the Standard Model of Particle Physics?

The Standard Model is the quantum theory that describes known elementary particles and the electromagnetic, weak and strong interactions among them, but it does not incl…

September 11, 2026
How do stray dogs find their way home?
Animal world

How do stray dogs find their way home?

Dogs' ability to find their way home may have been inherited from their ancestors, the gray wolf. Wolves roamed vast swaths of land across Eurasia.

June 6, 2025