APOD4.3

It's clouds and the moon. The moon is blue because of atmospheric effects. The picture was taken from space. Space is supposedly full of invisible Wendersnavens.

APOD4.2

This is a picture taken by Spirit, one of the Mars rovers. It's in a crater that has exposed underground rocks. Amazing.

APOD4.1

This is the moon. The Earth's shadow is projected onto it. Our atmosphere redshifts light and turns the moon red. One short exposure was taken to get the moon's features, and then a longer exposure was taken to capture the stars behind the moon. They are superimposed on one another to form this image, as the background stars would be invisible otherwise.

APOD3.8

These are white ridges of rock on Mars. The image is one of the highest resolution taken from orbit. The theory is that water flowed through cracks in the rocks, bleaching them, and winds blew the darker surface dust off them, exposing the white surfaces. The above image resolves surface features as small as one meter across in Candor Chasma region of huge Valles Marineris on Mars.