Acloud of "dark plasma" erupted from the sun on Sunday and is predicted to make contact with Earth on Wednesday, giving rise to the possibility of a minor geomagnetic storm. The eruption of material is known as a coronal mass ejection (CME)—a cloud of charged solar gas and magnetic fields. It was launched toward Earth on August 14 from a region of the sun known as AR3076. Solar activity news site spaceweather.com stated on Monday morning that the "plume of dark plasma" was traveling at over 1.3 million miles per hour. At that speed, it's expected to take a few...