Scientific Terms

Telescope

Photo by: DrJunge Creative Commons A telescope is an instrument used to observe objects from afar. The word is derived from Greek words tele and skopein which means “far” and “to see” respectively. Contrary to popular belief, it was not ‘invented’ by Galileo. There has been evidence of a refracting telescope that has been in

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Neutron Star

Stars go through various phases of its existence. No one knows for sure how stars are formed, but astronomers theorize that they first come into birth as a nebula, and they finally end their lives as a neutron star, otherwise known as a white dwarf. Thereafter, they are assumed to to form part of a

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Nebula

The word “nebula” comes from Latin which means “cloud.” It is apt, because nebulae (the plural of nebula) look like clouds of gases. Nebulae are made up mostly of hydrogen and helium gases, plus plasma and dust. These clouds are believed to be the birthplace of stars.

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Neutron

A neutron, together with an electron and a proton, makes up an atom, the tiny particle that is the building block of all matter and everything that is in the universe. These three components of an atom were once thought to be the very basic building blocks of matter, but later discoveries unearthed the existence

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Photosphere

Light emitted by astronomical bodies is one of the major clues found in the vast universe. With light, astronomers and astrophysicists can see beyond the stunning brilliance of the celestial bodies found in our galaxy. The Sun is probably one of the most brilliant celestial bodies that we have seen and the nearest to Earth.

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Reticle

Fine lines or webs used in the focal plane eyepiece are called Reticle. It is used for centering objects or as a guide for making angular measurements. It is commonly used for telescopes, cameras and even rifles. It is also known as graticule. The lines on the reticle are also typically illuminated.

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