... The Highs and Lows of Earth . ... A truly global answer has now been created by the Global Land One-km Base Elevation (GLOBE) Project. ... 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. ... 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. ...