... Roll Cloud Over Wisconsin . ... These rare long clouds may form near advancing cold fronts. ... This cosmic snapshot composed with image data from NASA's Wide-field Infrared Survey Explorer (WISE) satellite captures a multitude of faint stars and distant galaxies toward the constellation Lyra at wavelengths longer than visible light. ... Hickson 44 in Leo . ... Yes, but how many dark clouds have a multicolored lining? ... TrES 2b: Dark Planet . ... Why is this planet so dark? ...