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

Galileo and the Telescope. By David Levin; Posted 05.19.11; NOVA; Galileo's observations of the night sky in the early 1600s confirmed a new model of the universe, in which the Earth orbited the ...

Galileo’s telescope (right) uses lenses to magnify about 21 times but gives very restricted views so that he was able to see only about a third of the Moon at once. SSPL via Getty Images.

Since Galileo first observed them through his telescope in the early 1600s, sunspots have fascinated scientists.

Galileo's Telescope Travels Far, Sees Farther Instruments of revolution can appear deceivingly simple. With a bit of wood, copper wire and paper, ...

Object Details Author Land, Barbara Contents Hans Lippershey's ingenious spyglass -- Galileo's new window on the heavens -- Johannes Kepler, the nearsighted wizard -- Isaac Newton's reflecting ...

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

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

Today is Galileo’s 456th birth anniversary. His iconoclastic reputation overshadows his basic raison d’etre at the time – to make a buck. He was a struggling teacher who worked in the ‘gig economy’ of ...

Galileo Builds the First Telescope 1609 A.D. Five years after the appearance of the great supernova of 1604, Galileo builds his first telescope.