... Mars Over the Allalinhorn . ... What's that bright object in the sky? ... The International Space Station from Above . ... The International Space Station (ISS) is the largest human-made object ever to orbit the Earth. ... An eerie blue glow and ominous columns of dark dust highlight M78 and other bright reflection nebula in the constellation of Orion. The dark filamentary dust not only absorbs light, but also reflects the light of several bright blue stars that formed recently in the nebula. ...