03 August 2018
Vol 361, Issue 6401

About The Cover

Cover image expansion

COVER Jets of hot plasma trace magnetic field lines that leap out into space from the Sun's surface, as shown in this colorized image from NASA's Solar Dynamics Observatory, which stares at the Sun from a vantage near Earth. New observatories will study these magnetic fields up close to understand how they heat the Sun's atmosphere and launch the solar wind. See page 441.
Image: Nathalia Alzate/SDO/NASA