... Tempel Tuttle: The Leonid Comet . ... Asteroid Annefrank . ... NASA's interplanetary probe STARDUST, on its way to Comet Wild 2 in January 2004, passed asteroid 5535 Annefrank earlier this month. ... What causes the surrounding shells in peculiar galaxy Cen A? Last month a fascinating image of peculiar galaxy Centaurus A was released, processed to highlight a faint blue arc indicating an ongoing collision with a smaller galaxy. A Green Flash from the Sun . ... It's a green flash from the Sun. ...