images

The Sun seen by SDO - June 21 2013

by

Nasa/Novapix

Reference

a-sol02-40040

Date

2013-08-07

On June 20, 2013, at 11:24 p.m., the sun erupted with an Earth-directed coronal mass ejection or CME, a solar phenomenon that can send billions of tons of particles into space that can reach Earth one to three days later. These particles cannot travel through the atmosphere to harm humans on Earth, but they can affect electronic systems in satellites and on the ground.