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Black holes

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  BLACK HOLES MAY BE DEFINED AS –                                            The region of space-time exhibiting tremendous gravitational-acceleration so strong that nothing,no matter ,no particles nor even electro-magnetic radiation such as light cannot escape from it. ¡ Black holes seem like mystical objects ,but they are  an integral part of current astrophysics and are at the centre of  attempts to unify quantum physics and general relativity.  Humankind has been very curious to know better and more  about  black holes ,since the objects whoe gravitational fields are too strong for light to  escape  were first considered in the 18 th  century by by John Michell and  Pierre Simon Laplace.   History of Black Holes The idea of a body s...

Aurorae

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   All you need to know,  Aurorae Introduction:      Have you seen those beautiful green and red lights in the sky that appear in Polar Regions of the earth? These lights are nothing else but Aurorae. Even though they seem like beautiful hanging lights in the sky, there is a scientific reason behind it and I’m going to tell you about these beautiful hanging lights in the sky . 1. What is an aurora? If you go near Polar Regions of earth you might see some beautiful lights in sky thee lights are known as aurorae. Aurorae are a natural light display in sky. Aurorae are actually a disturbance in the Earth’s magnetosphere caused by the solar winds coming from the sun. the word "aurora" is derived from the name of the Roman goddess of the dawn’ scientifically aurorae are light forming after collision of solar waves and gas atoms. 3 .     2.  History of aurorae.         The history of aurorae doesn’t start fro...