The measurement of this phenomenon was the goal of the Ulysses spacecraft.
The measurement of this phenomenon was the goal of the Ulysses spacecraft. Its primary cause is the 2/7 power temperature decrease as compared to the inverse square decrease of gravity, and the co-rotating interaction regions associated with it cause (*) geomagnetic storms on Earth. Moving slower over streamers than over the coronal holes, it experiences a bow shock at the heliopause. For 10 points—  identify this stream of charged particles being continuously ejected in an envelope from the sun.
The measurement of this phenomenon was the goal of the Ulysses spacecraft.
solar wind