Earth-directed Coronal Mass Ejection from Sun | NASA’s SDO FriendsofNASA.org: The Sun emitted an Earth-directed coronal mass ejection (CME) on July 21, 2024. NASA’s Solar Dynamics Observatory (SDO), watching the Sun constantly in extreme ultraviolet light, captured images of the event (see brief, bright flash at upper left). A CME is an eruption of solar material. When they arrive at Earth, a geomagnetic storm can result. A G2 geomagnetic storm watch has been issued. Watches of this level are un