Viewing The Universe
Descriptive Volcabulary
What is Astronomy?
Astronomy, is the study is the scientific study of the universe about many discoveries, such as new planets, stars, black holes, and nebulas. Astronomy is also the study of star shines, and new energy sources on the earth. Astronomers protect catastrophes like collisions between Astroids, and Earth.
Objectives:
2. Identify the visible and nonvisible parts of the electromagnetic spectrum.
3. Compare refracting telescopes and reflecting telescopes.
4. Explain how telescopes for nonvisible electromagnetic radiation differ from light telescopes.
Astronomy Vocabulary
Light-year
Light-year - a light-year is the average distance between the Earth and Sun; approximately 150 million kilometers
Galaxy
Galaxy - A collection of stars, dust, and gas bound together.
Astronomical Unit
Astronomical Unit - The average distance between the earth and the sun; approximately 150 million kilometers
Electromagnetic Spectrum
Electromagnetic Spectrum - All of the frequencies or wavelengths of electromagnetic radiation.
Refracting Telescope
Refracting Telescope - A telescope that uses a set of lenses to gather and focus light from distant objects.
Reflecting Telescope
Reflecting Telescope - A telescope that uses a curved mirror to gather and focus light from distant objects.