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Showing posts from January, 2023

Stellar Classification

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Stars: What are they and how are they classified? One thing we all have in common is that we all love to stare at the night sky and look at the stars. But when we see thousands of stars in the night sky to accompany us in the middle of the night, how long has it been since you actually thought about stars? Most people know that our sun is a star. But what else do you know about it? Let's find out together!  A Star is a luminous hot ball of gases (mostly hydrogen and helium) held together by its own gravity. Every star is supported by nuclear fusion where two hydrogen nuclei are merged together to form helium nuclei. As of now there are seven classifications for stars. These stars are classified under the Morgan-Keenan (MK) system using the letters O, B, A, F, G, K and M, a sequence from the hottest (O type) to the coolest (M type). 1) G - Type Stars Let us start with a star that comes to all our minds first, the Sun. The Sun is literally part of our daily life and it's one of t

Applications of Astronomy in Daily Life

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What is Astronomy? When sitting by the window and staring out to the sky, have you ever wondered what else might be out there? Astronomy is an area of study that deals with celestial objects, space, and physical objects as a whole. This branch of science is so vast that there are near infinite possibilities and applications to how it can affect our day-to-day lives. Some instances include: 1) Satellite services in mobiles and communications Mobiles and data communications is one of the fastest developing sectors currently. It has reached a point where imagining a world with no phones, no television, no internet and no GPS is unthinkable, and to some, unlivable. You don’t need to be an expert in the subject to know that satellites are used for data communications and navigation systems. This is done through a portable wireless technology with satellite communications between the satellite and earth stations. 2) Climate Study Has it ever crossed your mind how your phone can magically pr