... But this grid of embedded swirls and streaks actually follows the dramatic development of planet Earth's auroral substorms. ... Our solar system's ruling giant planet Jupiter and 3 of its 4 large Galilean moons are captured in this single Hubble snapshot from January 24. ... M104: The Sombrero Galaxy . ... The striking spiral galaxy M104 is famous for its nearly edge-on profile featuring a broad ring of obscuring dust lanes. ... Where do comet tails come from? ... January . ...