Venus and Mercury were closer earlier this month, but they're easier to see now. Don't miss these 2 innermost worlds in our solar system, in the west after sunset.
You'll find rainbow-like colors in both cloud iridescence and coronas around the sun. But iridescence tends to look more random, while coronas are circles ... usually.
The edgewise view into our own galaxy, looking toward the galaxy's heart, from EarthSky community members who ventured into the cold and darkness before dawn in February 2018.