You'll see a true iridescent cloud when the sun is nearby. The colors will appear randomly distributed. Here's one with beams of light - crepuscular rays, or sunrays - appearing to shoot from it.
Photographer Eliot Herman got lucky and captured a pink lunar halo when he was out snapping pictures of Venus before dawn on November 26 in Tucson, Arizona.
The walking and hopping SpaceBok robot is being tested now in ESA's Mars Yard, in the Netherlands. Someday these little robots might help explore the moon, or Mars.
This comet is due to pass closest to our sun and Earth in December 2018. It's already the brightest comet in the night sky, visible to astronomers with telescopes and binoculars. A new image shows the comet's rotation!
There's a legend about this tree. It's said it started out as a fence post about 80 years ago, then sprouted into the tree you see here, beloved of photographers.
Gilbert Vancell caught these 2 dwarf galaxies - satellites to our Milky Way - from Bromo Tengger Semeru National Park in Indonesia, home to active volcanoes.