News tagged with spitzer space telescope

A green ring fit for a superhero

(PhysOrg.com) -- This glowing emerald nebula seen by NASA's Spitzer Space Telescope is reminiscent of the glowing ring wielded by the superhero Green Lantern. In the comic books, the diminutive Guardians of ...

Jun 16, 2011 4.5 / 5 (2) 5 | with audio podcast

The outbursts of Fornax

(PhysOrg.com) -- The galaxy Fornax A, at a distance of about 74 million light-years, is one of the nearest and brightest galaxies with giant radio lobes. These huge radio lobes -- they span a million light-years ...

Oct 01, 2010 5 / 5 (7) 4 | with audio podcast

The Cosmic Distance Scale

(PhysOrg.com) -- In 1908, Harvard astronomer Henrietta Swan Leavitt discovered that a class of stars called Cepheids have brightnesses that vary regularly with periods that are directly related to their intrinsic ...

Jan 29, 2010 4.6 / 5 (19) 0 | with audio podcast

Baby Jupiters must gain weight fast

The planet Jupiter gained weight in a hurry during its infancy. It had to, since the material from which it formed probably disappeared in just a few million years, according to a new study of planet formation ...

Jan 05, 2009 4.3 / 5 (3) 0