You might think a hummingbird simply beats its wings so fast and hard it pushes down enough air to keep its small body afloat. Turns out it's much trickier than that.
The normally bland face of Uranus has become increasingly stormy, with enormous cloud systems so bright astronomers can see details in the planet’s hazy blue-green atmosphere.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.