... 12.12.2013 . ... Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. The Coldest Place on Earth . ... Comet Lovejoy over a Windmill . ... Everest Panorama from Mars . ... For an Earth-orbiting gamma-ray telescope, Earth is actually the brightest source of gamma-rays, the most energetic form of light. ... Blue light from the star Rho Ophiuchi and nearby stars reflects more efficiently off this portion of the nebula than red light. ...