Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.

It may seem to us today to be only a small step from Galileo's observations to Newton's laws of motion. But it has to be observed that the two propositions above, in the form in which they are ...

Today, the simple laws of motion as defined by Isaac Newton, for example, are known to the most modest students, yet Galileo spent his life unravelling these mysteries. His many discoveries ...