... Comet Borrelly's Nucleus . ... The probe, Deep Space 1, survived. ... A Solar Prominence Erupts . ... Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. ... Full Throttle For Deep Space 1 . ... Where a Black Hole Roams . ... This exotic system - thought to be a stellar mass black hole consuming matter from a companion star - was discovered only last year as a flaring celestial x-ray source. X Ray Stars in M15 . ...