Only the latter group—which occur at higher altitudes and lower temperatures than water ice clouds—shine in the way shown above. Noctilucent clouds occur on Mars at altitudes between roughly ...

A new image from the Hubble Space Telescope shows a cosmic cloudscape, with clouds of dust and gas swirling in beautiful colors.

Stars emerge from vast regions of gas and dust known as molecular clouds. These stellar nurseries, often spanning hundreds of ...

The designer started with a silk mural by Phillip Jeffries, its striking blue peonies intended to refresh and enliven the ...