Spectrograph.
An optical telescope is the simplest instrument to view the heavens.
Telescope.
Taiping Heavenly Kingdom ended in 1864.
Sky blue
A Comet
A spectrometer.
Astronomers.
astronomers
Johannes Kepler
Yes, they do.
An optical telescope is the simplest instrument to view the heavens.
telescope
Typically, astronomers use various types of telescopes. These days, everything is being controlled by computers, so you'd need to include "computers" in any list of tools.
Telescope.
they studied the heavenly bodies,mapped the stars,the planets,and the phases of the moon.
Optical or radio telescope
IT IS USED for us to see planets part of space and some parts of our heavenly bodies and it is also used for astronomers to see heavenly bodies for then to write a fact about our space