<p><b>A masterly overview of the development of cosmological thinking from the Greeks, via Newton and Einstein, to the present day.</b><br><br>It is science''s last and greatest challenge: fathoming the depths of the night sky. The objective: to crack the cosmic code, to unravel the blueprint for nature''s grandest conception, a machine constructed on an unimaginably vast scale - the Universe itself. <br><br>Today''s model of an expanding Universe - the big bang cosmology - is actually built on principles derived from a few simple mathematical equations. Gravity-warped space time, quantum mechanics, the physics of the subatomic, these crucial insights, stemming from Einstein''s revolutionary theories of relativity, have led to a simple and elegant framework within which the whole of the Universe, over billions of years, has been described.<br><br>But recent evidence has begun to make wrinkles in the neat fabric of the big bang cosmology. There is now overwhelming evidence that there is