... The human is Astronaut Steven L. Close up of the Face on Mars . ... Wouldn't it be fun if clouds were turtles? ... Comet Hale-Bopp Over Val Parola Pass . ... Comet Hale-Bopp became much brighter than any surrounding stars. ... Strange Orange Soil on the Moon . ... The color of a star indicates its surface temperature, an important property used to assign each star a spectral type. Most stars in the above Sagittarius Star Cloud are orange or red and relatively faint, as our Sun would appear. ...