Those with a rudimentary understanding of history might claim that it was Galileo Galilei who invented this device. After all, he was just as well known for his inventions as he was for his search ...

Sunspots are the most striking phenomenon of the solar magnetic field. After the invention of the telescope early in the 17th ...

The field of optics had become so established, and the principles behind Lippershey's invention so intuitive, that Galileo started making his own telescopes practically as soon as he heard about them.

Gazing through his telescope, Galileo saw that the universe was vaster and that the stars were more abundant than people had previously presumed. He also observed that splotches covered the sun and ...