1. A stream of charged atomic particles, mostly protons an electrons, from the sun's corona, flowing outwards at speeds of between 300 kilometers per second or 200 miles per second and 1,000 kilometers per second or 600 miles per second.
2. The stream of charged particles "blown" by the thermal pressure of the sun out from its corona, which it can not retain by gravity.

In the vicinity of the earth, these particles have a velocity of about 300 miles, or 500 kilometers, per second.