Hundreds of them. Who was first? Probably Galileo. We have no record of anyone point his new telescope at the skies before him. Probably SOMEBODY did; the telescope had been invented 5 years or so before Galileo got his first one, but nobody wrote about it.
Galileo.
telescope,spectroscope,spaceprove,viewer
Galileo Galilei.
In astronomy, he used a telescope.
Radio telescopes are mainly used for astronomy.
An astronomical telescope is one that is used in astronomy - i.e., to watch stars, planets, comets, etc.
Galileo Galilei first used the "new" telescope in 1609
The telescope has extended man's vision into the heavens.
The primary tools used in early astronomy were a compass to measure directions, a sextant (or octant) to measure angles in the sky, a watch and a telescope.
A high energy particle telescope is used in astronomy, and is typically found in space observatories. Like most telescopes, it is used to observe celestial bodies
There are a number of instruments used in the study of astronomy. The telescope is best known, but instruments including satellites, radio waves and simple charts are all used in astronomy.
The telescope.