<P> `` Newton 's cannonball '' , presented as a `` thought experiment '' in A Treatise of the System of the World , by Isaac Newton was the first published mathematical study of the possibility of an artificial satellite . </P>
<P> `` Newton 's cannonball '' , presented as a `` thought experiment '' in A Treatise of the System of the World , by Isaac Newton was the first published mathematical study of the possibility of an artificial satellite . </P>
who came up with the idea of a satellite
who came up with the idea of a satellite
Isaac Newton
Isaac Newton