... This aurora arched from horizon to horizon. During the current Shelios expedition to observe and learn about the northern lights, the sky last weekend did not disappoint. ... TrES 2b: Dark Planet . ... Why is this planet so dark? Planet TrES-2b reflects back less than one percent of the light it receives, making it darker than any known planet or moon, darker even than coal. ... The Fairy of Eagle Nebula . ... The dust sculptures of the Eagle Nebula are evaporating. ... Next [ Last page ] . ...