Image description: These images show a solar flare as observed on January 23. You can see the sun’s surface brighten as gas was superheated and magnetically supercharged. In the far right image, there is a stream of solar material flowing into space, likely solar protons and a coronal mass ejection.
Solar flares and coronal mass ejections are not a danger to humans on Earth. The planet’s magnetic field and atmosphere deflect and absorb the energy. Sun storms can pose some risks to astronauts, and upset science, military, and communications satellites.
Images courtesy of NASA’s Solar Dynamics Observatory