A slowdown at the sun’s surface explained

Escaping photons may slow the rotation of the star’s outer layers

The Sun

SOLAR SLOWDOWN  The sun’s surface rotates more slowly than its inner layers. Scientists now have an explanation: Photons leaving the sun could carry angular momentum away, slowing the top layer’s spin.

SDO/NASA

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 Physics

From the Nature Index

Paid Content