Describing The Universe

The electromagnetic spectrum and Telescopes

What is the value of astronomy?!?

Astronomy is valuable to us humans for many reasons, especially for the natural resources it produces to help us survive our everyday life. Astronomers in the process of observing the universe comes down to making new and exciting discoveries that leads us to learn the process involved in the formation of the solar system. It's valuable also because astronomers can possibly learn how to protect us from potential catastrophes.


  • Describe characteristic of the universe in terms of time, distance, and organizations
  • Identify the visible and no visible parts of the electromagnetic spectrum.
  • Compare refracting radiation differ from light telescopes.
  • Explain how telescopes for no visible electromagnetic radiation differ from light telescopes.

Astronomy Vocabulary

Refracting and Reflecting telescope and similarities

Refracting and Reflecting Telescopes

There's two types of optical telescopes that are reflecting and refracting telescopes. Both telescopes are optical, and are used to collect radiation, in other words the instrument is used to collect energy from the star. Refracting telescopes contains clear lenses that are used in sets to gather and focus the light from distant objects. Also, the telescope are different to make very large lenses of the required strength and clarity. The reflecting telescope is a telescope that uses a curved mirror to focus and gather light from distant objects. The telescope come in different colors of light at different distances. Reflecting telescope can be much larger and can also gather more light than reflecting telescopes can.

Electromagnetic Spectrum (Invisible and Visible)

The electromagnetic spectrum is all of the wavelengths of the electromagnetic spectrum. The radiation is composed of traveling waves of electric and magnetic fields. Both invisible and visible spectrum has energy coming from stars, that travels in waves, and of course forms radiation. Both also have the light that travels at the same speed. The shortest the wavelength of visible light range are red and orange. When a white light passes the prism, its broken into sets of colors than is visible to the human eye. Special instruments are used to detect electromagnetic radiation since its invisible. Also the invisible waves include infrared, radio waves, microwaves, ultraviolet rays, x rays, and Gamma rays. The wavelength shorter than violet and longer than red can't be seen

Invisible Light Telescopes

The Electromagnetic Spectrum help scientists to study all types of radiation and the information from space. Scientist use the Invisible Light Telescope is a ground based telescope which are used to study the forms of radiation at the high elevations. One of the problems with the Invisible Light Telescope is that the Earth's atmosphere creates a shield against the radiation. The water vapor prevents the Gamma Rays, Infrared, Ultraviolet Rays, and X Rays from traveling in the Earths surface.
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Space Based Telescopes

In our universe, the Earth's atmosphere cannot interfere with the detection of the Electromagnetic Radiation. Spacecraft including the telescopes also other instruments get launched in order to study the objects in our universe ( stars, planets, and distant objects). One of the famous spacecraft launched into space is the Hubble Space Telescope that was launched to collect the electromagnetic radiation that space received. The Spritzer Space Telescope detected the infrared radiation, while the Compton Ray Observation detected the Gamma Rays.
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