Clouds on Mars are infrequent, but the Curiosity rover has captured some. Scientists are analyzing the images to learn about these elusive atmospheric delights.
In recent years, earthly observers couldn't see Saturn's southern hemisphere. It was largely hidden behind Saturn's rings. In 2021, Saturn's rings and north pole reached their maximum tilt toward Earth, and now the southern hemisphere is coming back into view ... colored blue.
What a catch! This EarthSky community member caught the International Space Station (ISS) slicing across the night sky on May 17, 2021, passing Polaris, the North Star.
The brightest planet Venus has now returned to the evening sky, joining Mercury. It'll surprise you by appearing so bright, low in the western twilight. The moon swept past Venus Wednesday and Mercury Thursday ... this weekend, Mars!