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Artist concept of space weather showing an active Sun with flares and a CME in the upper right, the Earth in the lower right with types of technology affected by space weather to the lower left; satellites, airplanes, the ISS and ground-based electrical lines.

Heliophysics

Studying the Sun-Earth connection.

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Latest News

NASA’s STEREO Detects a CME From the Sun

A combined view from two NASA satellites of the coronal mass ejection that occurred on May 17, 2013, at 5:36 EDT.

On 5:24 a.m. EDT on May 17, 2013, the sun erupted with an Earth-directed coronal mass ejection or CME, a solar phenomenon that can send billions of tons of solar particles into space.

News

The Sun Sends Two CMEs Toward Mercury

On the night of April 24 and the morning of April 25, 2013, the sun erupted with two coronal mass ejections (CMEs), solar phenomena that can send billions of tons of solar particles into space.
Three Solar Eruptions in 2 Days

The sun erupted three times over April 20 and 21, sending billions of tons of solar particles into space. The eruptions (called CMEs) were not Earth-directed.
Solar Storm Near Earth Caused by Fast CME

Friday's fast moving CME has reached Earth and sparked a mild geomagnetic storm. Will higher latitude skies be turned green for St. Patrick's Day?
A Coronal Mass Ejection Erupts From the Sun

A small, Earth-directed Coronal Mass Ejection erupted early this morning.
Sun Shoots Out 2 Coronal Mass Ejections

One of the two slow-moving ejections from Jan. 23 is Earth-directed. In the past, CMEs of this speed have not caused substantial geomagnetic storms.
New Sunspots Producing Space Weather

On Jan. 13, 2013, at 2:24 a.m. EST, the sun erupted with an Earth-directed coronal mass ejection or CME. The CME left the sun at speeds of 330 miles per second and is expected to impact Earth around Jan. 16.
Sungrazing Comets as Solar Probes

On Dec. 15, 2011, NASA's Solar Dynamics Observatory captured footage of Comet Lovejoy approaching the sun. The images and data collected by NASA's solar observing fleet can help scientists learn more about the sun itself.