The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

“Another feature of the Lunar Anthropocene will be increased dust transport, which may even extend to creating a dust cloud orbiting around the moon,” said Gorman. “This will affect the ...

NASA's Curiosity rover has captured images of rainbow-colored noctilucent clouds in Mars' atmosphere. Made of dry ice, these ...

The ring will remain visible as long as cirrus clouds create a veil across the moon. A halo will form around the sun when this same process occurs during daytime hours. Unlike rings around the ...

February’s full moon, called the snow moon, is also the final full moon of meteorological winter. Here’s how to see the moon ...