One of the main tools is the Compact Coronagraph, the first of its kind to be included in a GOES-R Series satellite. This will study the sun’s corona and alert scientists when a coronal mass ...

Coronal holes in the Sun continue to send solar wind toward Earth, increasing the chances of Northern Lights across the northern U.S. this week, according to the latest space weather forecast.

Each satellite is smaller than a compact car but stuffed full of probes and other sensors. The larger one, known as the Coronagraph spacecraft, will explore the Sun’s corona, or outer atmosphere ...