NASA’s infrared telescope WISE (Wide-field Infrared Survey Explorer) has recently spotted several potentially harmful asteroids which were once hidden. The use of this new infrared telescope which was originally designed to map the entire sky by observing infrared wavelengths, has made this astonishing discovery which does pose a threat to our planet as these asteroids are said to been located near the earth’s orbit. For details on this story, please use this link:
http://www.newscientist.com/article/dn18616-dark-dangerous-asteroids-found-lurking-near-earth.html