S’épargner le sort des dinosaures   It is thought that dinosaurs became extinct due to the collision of a large asteroid with the Earth, 65 million years ago. L'ESA et les géocroiseurs     The yellow dot at the centre of the image represents the Sun. The light blue circles show the orbits of Mercury, Venus, Earth, Mars and Jupiter (from smallest to biggest). The locations of the main belt asteroids are indicated by green dots. NEOs are shown by red circles. Release date: 25 septembre 2002