(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 luminosities.
Astronomy
Jan 29, 2010
0
0
(PhysOrg.com) -- As part of its Hubble Heritage program, NASA has released an image, taken by a team led by UA astronomer Rodger Thompson, of a galaxy that resembles a snowflake.
Astronomy
Jan 18, 2010
1
1
(PhysOrg.com) -- Ultraluminous infrared galaxies have luminosities that exceed a trillion suns.
Astronomy
Jan 15, 2010
0
0
The premiere observatory of the next decade, the James Webb Space Telescope, will launch in 2014 in search of "big game"--namely, the first stars and galaxies ever formed in our Universe. But the "little game" could turn ...
Astronomy
Jan 14, 2010
0
0
Most astronomers wouldn't dream of opening their observatory's doors in 100 mph winds. Yet NASA's new SOFIA telescope recently flew in an airplane at 250 mph with doors wide open.
Space Exploration
Jan 8, 2010
3
0
(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or WISE, has captured its first look at the starry sky that it will soon begin surveying in infrared light.
Astronomy
Jan 6, 2010
0
0
(PhysOrg.com) -- NASA's Hubble Space Telescope has broken the distance limit for galaxies and uncovered a primordial population of compact and ultra-blue galaxies that have never been seen before.
Astronomy
Jan 5, 2010
24
0
NASA launched Monday a new breed of satellite called WISE on a mission to orbit Earth and map the skies to find elusive cosmic objects, including potentially dangerous asteroids.
Space Exploration
Dec 14, 2009
4
1
(PhysOrg.com) -- The countdown clock is ticking, with just days to go before the Wide-field Infrared Survey Explorer, or WISE, rockets into space on a mission to map the entire sky in infrared light.
Space Exploration
Dec 9, 2009
0
0
Understanding the evolution of galaxies is one of the biggest questions confronting astronomers today. Looking at distant astronomical objects gives scientists important clues to the origins of the Milky Way Galaxy and other ...
Astronomy
Dec 8, 2009
0
0
