The sun is flinging 1 million tons of matter out into space every second! We call this material solar wind. It is made of Hydrogen (95%) and Helium (4%) and Carbon, Nitrogen, Oxygen, Neon, Magnesium, Silicon and Iron (~1%). These atoms are all in the form of positive ions which means they have lost electrons because the temperature is so hot. So really, solar wind is positive ions and the electrons these ions have lost. We call this plasma.
At the orbit of the Earth, the solar wind has an average density of about 6 ions/cm3 and
the temperature of the solar wind plasma around the Earth is about 150,000°K.
The solar wind moves in a range from 300 to 600 km/second , but, some explosive events like solar flares or Coronal Mass Ejections (CME) on the Sun can produce speeds over 1000 km/s!
The solar wind goes all the way past Pluto.