 Astronomy- the study of all physical objects beyond earth.

 Refracting Telescope Reflecting Telescope

 The Eltromagnetic spectrum is made of all of the wavelengths of eltromagnetic radiation.

 Constellations are sections of the sky that contain recognizable star patterns.

 Is the apparent path the sun takes across celestial sphrtr

 Imaginary circle created by earth’s equator.

The earth’s sky is a very interesting place. There is so much to learn about it. You can never know what is out there if you never look.