When the sun sets tonight, go outside and look south. You'll find a pair of bright "stars" but only one is actually a star. On the left is Saturn, on the right Regulus. The ringed planet and the first-magnitude star are only 2 degrees apart.

A solar wind stream is buffeting Earth's magnetic field, causing not only Northern but also Southern Lights. Sky watchers should be alert for more lights tonight as the solar wind continues to blow.