The two names that complemented Isaac Asimov in writing science fiction include the names of Arthur C. Clark and Robert A. Heinlein and together they are being attributed with the title of the ‘Big Three’. If we believe in the thoughts that critics propagate, they give the ranking also to the writers. The give Arthur C. Clark the first rank and the second rank goes to Isaac Asimov and obviously Robert A. Heinlein stands at the third rank in their ranking. But they themselves never indulge in such kind of rankings and you can find that they deny this ranking procedure also.

If we take the work of Arthur C. Clark, he is quite famous for propagating that there must be life on the planet mars and with further research, his imagination is being corroborated too.