The solar wind blows from the Sun at a gentle 10 km/s or so and then accelerates up to around 800 km/s further out in space. That's a top speed of nearly 3 million kilometres per hour. The exhaust gas produced by a jet engine travels at about 1,300 miles per hour. Convert that into metric units and we get 0.6 km/s. read more
The solar wind blows from the Sun at a gentle 10 km/s or so and then accelerates up to around 800 km/s further out in space. That's a top speed of nearly 3 million kilometres per hour. read more
By contrast, the fast solar wind has a typical velocity of 750 km/s, a temperature of 8 × 10 5 K and it nearly matches the composition of the Sun's photosphere. The slow solar wind is twice as dense and more variable in nature than the fast solar wind. read more
The Solar Wind The solar wind streams off of the Sun in all directions at speeds of about 400 km/s (about 1 million miles per hour). The source of the solar wind is the Sun's hot corona. read more