3 bright stars in the Night sky

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PARADOXES- TWIN PARADOX

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  A very beautiful thought experiment is here you might be aware of, in this experiment either you or your twin will be getting old after time travel but you have to think that way. Yes very interesting it is!  Now just imagine, You let it be X and your brother which is twin let it be Y, you both are of the same age let say you both are 18.  You both are coming home from school, You reached home But your brother Y has a meeting with some Aliens which is on another planet outside of the solar system very strange! The planet your brother has to reach is 1 light-year from the planet Earth which Approximately 9.461e+12km. But your brother has a spacecraft having a very high speed greater than the speed of light. If we go there with a normal spacecraft having a normal speed less than the speed of light then the time required to reach there and return home is let's say 70 years.  If your brother reaches there and returns home after all work is done then at that time you X ...
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Some Stars of the Ursa Major Constellation

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formally named  Alkaid   , is a star in the constellation of Ursa Major. It is the most eastern (leftmost) star in the Big Dipper (or Plough) asterism. Mizar   is a second-magnitude star in the handle of the Big Dipper asterism in the constellation of Ursa Major.  officially named  Alioth   , is, despite being designated "ε"   (epsilon), the brightest star in the constellation of Ursa Major
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Is Mars Our Future Or Not?

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  Mars is the 4th planet of our solar system and the nearest planet of Earth. 1610 was the year when Galileo Galilei discovered Mars with telescopic observation, the distance between the sun and mars is 228.19 million km. Behind the mars, there is the belt of so many Asteroids. The orbital period is 687 days which is quite more than the earth’s orbital period. Planet Mars is surrounded by so many artificial ( manmade) satellites. But mars have 2 natural satellites named Phobos and Deimos. Colonization on a different planet is also known as the Space settlement it is the political concept of space law for human habitation and the taking advantage of all-natural resources of that planet where we want to colonize. Yes, we can colonize Mars but it is too difficult to survive due to some issues.  Mars is on the boundary of the Habitable zone. A habitable zone is simply the orbit at a certain distance from the star where a planet or planetary surface can support water with sufficien...
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