February 11, 2011
This composite image of Arp 147, a pair of interacting galaxies located about 430 million light years from Earth, shows X-rays from the NASA’s Chandra X-ray Observatory (pink) and optical data from the Hubble Space Telescope (red, green, blue) produced by the Space Telescope Science Institute (STScI) in Baltimore, Md.
February 4, 2011
NASA’s NEOWISE mission has completed its survey of small bodies, asteroids and comets, in our solar system.
January 28, 2011
A hot star 20 times larger than the Sun, Zeta Ophiuchi is the blue spot in the centre of this image taken with Nasa’s Wide-field Infrared Survey Explorer.