... A great grouping of planets is now visible to the west just after sunset. ... Comet Ikeya Zhang Meets The ISS . ... Still catching the Sun's rays, the International Space Station (ISS) cruises across the early evening sky above Tomahawk, Wisconsin, USA. ... The Trifid Nebula from AAO . ... The red-glowing gas results from high-energy starlight striking interstellar hydrogen gas. ... Comet and Aurora Over Alaska . ... Flowing across the frozen Alaskan landscape is an easily visible, colorful aurora. ...