Did you know Mars has spiders? Well, sort of. This region is part of the Martian southern polar ice cap, and during the springtime, frozen carbon dioxide sublimates from a solid to a gas and gets trapped beneath the surface—creating these dark spider-like features, technically called “araneiform terrain.”
Our moon looks lovely in this photo taken from the International Space Station. Seen from Earth, a full moon looks nice and big in the night sky, but when you are that much closer it really looms large. Oh, and that blue to the right of the photo? That’s an Earth glow photobomb.
The European Southern Observatory captured this image of a stellar cluster 5,500 light years from Earth. Among the astral objects in the cluster, known as RCW 38, are many massive stars due to end their lives in the great death of a supernova. Fortunately we’re somewhat far removed from that otherworldly collapse.
But wait, don’t write RCW 38’s obituary yet! The European Southern Observatory’s Very Large Telescope zoomed in to snap this stunning photo of the stellar cluster. Much closer up, the bright clouds of dust are more detailed, and we can properly assess all the activity in this region.
A photographer in Europe captured the moon passing behind Earth in this time lapse of the January 2018 lunar eclipse. The result is a sort of lunar yoga—our moon streeetching in this groovy image. The reddish hue is created when light from the Sun passes through Earth’s atmosphere and is reflected, giving it the nickname “blood moon.”
Based on analyses of the clays that remain in this area, scientists who’ve studied the Eridania basin on Mars theorize it to be an ancient lake bed that was once filled with water. This lake would have existed some 2 billion years ago, eventually draining to the north.
If you need some cosmic perspective on our small world, images from Hubble are the way to go. Behold a galaxy cluster, one of the largest features humankind has ever discovered in the universe. Some of these clusters are 1 million billion times the mass of our Sun! In this image, stars from our own Milky Way sparkle in the foreground while whole spiral galaxies are peppered across the entire photo.