Physicists measured Earth’s mass using neutrinos for the first time

The tiny particles provide an independent test of some of the planet’s key properties

illustration of cosmic rays

PARTICLE PROBES  Subatomic particles called neutrinos are created when spacefaring protons and other particles smash into Earth’s atmosphere (illustrated). Scientists have now used neutrinos to measure the Earth’s mass and the densities of its layers.

Earth: Reto Stöckli, Nazmi El Saleous and Marit Jentoft-Nilsen/GSFC/NASA, adapted by E. Otwell

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Particle Physics

From the Nature Index

Paid Content