... What would it be like to stand atop the tallest mountain on Earth? ... Visible are snow peaked mountains near and far, tremendous cliffs, distant plateaus, the tops of clouds, and a dark blue sky. ... The Tadpoles of IC 410 . ... Big, beautiful spiral galaxy M101 is one of the last entries in Charles Messier's famous catalog, but definitely not one of the least. ... Commenting on the first view from space he reported, "The sky is very dark; the Earth is bluish. ... Lunar Farside . ...