Tiny explosions add up to heat corona

Solar nanoflares may explain high temperature far above sun’s surface

the sun in UV

HEAT SEEKER  The EUNIS rocket split ultraviolet light from a region (white) of the sun into its component wavelengths (left, right), which revealed emissions from highly ionized atoms in a 10-million-degree plasma.

SDO/EUNIS/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 Astronomy

From the Nature Index

Paid Content