3 bright stars in the Night sky

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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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CONJUCTION - 21DECEMBER 2020

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21 December-the day of the solstice- is the day where we saw the conjunction of Jupiter and Saturn.  But some curious minds will think that what is the conjunction?  In astronomy, a conjunction occurs when any two astronomical objects (such as asteroids, moons, planets, and stars) appear to be close together in the sky, as observed from Earth If two objects have the same right ascension or the same ecliptic longitude, they are considered to be in conjunction with one another. The planets regularly appear to pass each other in the solar system, with the positions of Jupiter and Saturn being aligned in the sky about once every 20 years. But What was special in this year’s conjunction? It’s been nearly 400 years since the planets passed close to each other in the sky, and nearly 800 years since the alignment of Saturn and Jupiter occurred at night, as it will for 2020, allowing nearly everyone around the world to witness this “great conjunction.” History of Jupiter and Saturn co...
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Evidences for the Dark Matter

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  Dark matter is known  as the “missing mass,” dark matter’s existence was first inferred by Swiss American astronomer Fritz Zwicky, who in 1933 discovered that the mass of all the stars in the Coma cluster of galaxies provided only about 1 percent of the mass needed to keep the galaxies from escaping the cluster’s gravitational pull.  In this blog we will discuss 5 different pieces of evidence for the existence of the dark matter  BENDING OF LIGHT Gravitational lensing:- The amount of bending is proportional to the mass of the object that causing the bending,  Light gets bent due to the mass of the object. In this image light from the distant galaxy is lensed due to galaxy clusters, so we get lensed images here on the earth. But we are getting an extra lensed image than usual but the Amount of bending is proportional to the mass of the object, so there is evidence of missing mass, We get the factor of the Dark matter here. We can derive the formula for this...
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