Moons and Bright Mars . ... Credit Copyright: Petteri Kankaro Explanation: In this serene view , the moons of Earth along with the bright planet Mars shine above the city of Turku near the southwestern tip of Finland. Of course Earth's large natural satellite, the Moon , at a distance of 400,000 kilometers, is by far the brightest object in this sky. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... A service of: LHEA at NASA / GSFC . ...