... Black Holes in Merging Galaxies . ... Violent galaxy mergers can feed supermassive black holes. ... The tantalizing sky above features a colorful lunar corona, where bright moonlight is diffracted by water droplets in the thin clouds drifting in front of the lunar disk. ... Clouds and Stars over Cotopaxi Volcano in Ecuador . ... Last week Opportunity surpassed Viking 1 as the longest running mission on Mars, now extending well over six years. ... M87: Elliptical Galaxy with Jet . ...