AFP - Getty Images
Green Lantern's ring?This emerald nebula, seen in a June 20 infrared image from NASA's Spitzer Space Telescope, is reminiscent of the glowing ring wielded by the superhero Green Lantern. In the comic books, the Guardians of the Planet "Oa" forged the Green Lantern's power ring, but astronomers believe rings like this are actually sculpted by the powerful light of giant "O" stars, the most massive type of star known to exist. Named RCW 120, this region of hot gas and glowing dust can be found in the murky clouds encircled by the tail of the constellation Scorpius. |