Space weather: the solar perspective

The Sun, as an active star, is the driver of energetic phenomena that structure interplanetary space and affect planetary atmospheres. effects Space Weather on Earth solar system increasing importance human spaceflight preparing for lunar Mars missions. This review focusing perspective relevant phenomena, coronal mass ejections (CMEs), flares, particles (SEPs), wind stream interaction regions (SIR). With advent STEREO mission (launched in 2006), literally, new perspectives were provided enabled first time to study structures evolution activity three dimensions. New imaging capabilities, covering entire Sun-Earth distance range, allowed seamlessly connect CMEs their counterparts measured in-situ (so called ICMEs). vastly increased our knowledge understanding dynamics due fostered development forecasting models. Moreover, we are facing challenging times gathering data from two extraordinary missions, NASA's Parker Solar Probe 2018) ESA's Orbiter 2020), will near future provide more detailed insight into image view points never approached before. current builds upon Living Reviews paper by Schwenn 2006, updating CME-flare-SEP perspective, observed multiple viewpoints concomitant surface signatures.