A:Stephen Hawking, in his latest book, The Grand Design, says that because there are laws such as gravity, the universe can and will create itself from nothing. In the same way, the world we live in came about as a result of the laws of nature. Scientists say that a supernova star, in the vicinity of our sun, exploded and sent massive amounts of heavy elements in the direction of the sun. These formed into an accretion disc around the sun, eventually coallescing into the various planets and asteroids.