Nanojets in the Solar Corona The solar corona, the hot outer layer of the Sun, has a temperature of over a million degrees Kelvin and powers a wind of charged particles, some of which bombard the Earth producing auroral glows and often disrupting global communications.

How Planetary Nebulae Get Their Shapes About seven and one-half billion years from now our sun will have converted most of its hydrogen fuel into helium through fusion, and then burned most of that helium into carbon and oxygen. It will have swollen to a size large enough to fill the solar system nearly to the current orbit of Mars, and lost almost half of its mass in winds.