Solarwind
Solarwind commonly refers to solar wind, the continuous flow of charged particles emitted by the Sun and other stars. In space physics it is primarily composed of protons and alpha particles, with minor heavier ions. The bulk of solar wind travels at speeds from about 300 to 800 kilometers per second. As it streams outward, it carries the interplanetary magnetic field into the solar system and forms the heliosphere, the bubble that surrounds the planets. The solar wind interacts with planetary magnetospheres, driving space weather that can affect satellites, communications, and power grids on Earth. Scientists distinguish fast solar wind, typically around 700 km/s emanating from coronal holes, from slow solar wind, around 400 km/s, associated with the solar equatorial region's streamer structures. Its acceleration is linked to processes in the solar corona, including magnetic reconnection and wave-particle interactions, and it follows a spiral pattern around the Sun known as the Parker spiral due to solar rotation.
The term Solarwind is also used informally as a variant spelling of "solar wind" in non-special contexts.
In research, solar wind is studied via in-situ measurements by spacecraft such as Parker Solar Probe, WIND,