photo : ESA HERSCHEL
9 January 2013
ESA’s Herschel space observatory made new observations of asteroid
Apophis as it approached Earth this weekend. The data shows the asteroid
to be bigger than first estimated, and less reflective.
Catalogued as asteroid (99942) Apophis (previously 2004 MN4), it is often nicknamed ‘the doomsday asteroid’ in popular media, after initial observations made after its discovery in 2004 gave it a 2.7% chance of striking Earth in April 2029.
La suite c'est ici ( en anglais ESA ) :
http://www.esa.int/Our_Activities/Space_Science/Herschel_intercepts_asteroid_Apophis
Contact : f6agv AT free.fr
