Solar wind near the Sun proves faster than thought, Proba-3 reveals

ESA's Proba-3 eclipse mission captured high-resolution views of the Sun's corona and measured slow solar wind speeds up to about 300 miles per second (roughly 480 km/s), four times faster than previously thought, suggesting the slow wind originates from nonuniform, gusty flows near the solar surface and offering new clues about how the solar wind is accelerated.