The first publication by Galileo Galilei has set a new auction record for the celebrated astronomer, selling for $1.5 million ...

Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light across space.

Galileo continued writing in conversational language for his landmark 1632 work, Dialogo sopra i due massimi sistemi del ...

Galileo climbed to the top of his house on Nov. 30, 1609, and used one of his early telescopes to observe the Moon.