The Guardian Wall
Andrew Rooke – Australia
Asteroids are small rocky objects that orbit the sun and are sometimes called minor planets. Experts say that asteroids are remnants of the rocky material that first formed the planets of our solar system 4.6 billion years ago. NASA has said that there are approx. 1,281,490 known asteroids in our solar system and no doubt many millions more that are unknown by our science. Most of the asteroids are orbiting the sun in between Mars and Jupiter however some cross the path of the Earth’s orbit and these have a usually remote chance of hitting the earth with potentially devastating results for life on the surface of our planet. Although most of these asteroids miss the Earth every now and then one does hit our planet. It is not a matter of whether this will happen, but when it will happen.









