... Why is the belt of Orion surrounded by a bubble? ... Progenitor hypotheses include the winds from bright Orion stars and the supernovas of stars long gone. ... This striking but unfamiliar looking picture of the familiar Orion region of the sky was produced using survey data from the now-defunct InfraRed Astronomical Satellite (IRAS). ... After parting with the Sun late last week, April's moon graced the early evening sky. ... During a solar eclipse, the Sun, Moon and Earth are aligned. ...