Enjoy this gallery of the best deep-sky photos of May from our EarthSky community. If you have a great photo to share, send it in. We love to see them!
Did NASA's Curiosity rover find dragon bones on Mars? Nah. But these wonderfully weird spiky rocks are some of the strangest formations the rovers have seen.
The closest planet to the sun, Mercury, has a tail much like a comet. See Mercury's sodium tail in photographs through special filters and learn more about it.