Astronomical Discoveries (Author : Kashishpreet )

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  • Kepler's Law 

Johannes Kepler was the one who proved that the planets moved around the Sun in elliptical orbits, rather than perfect circles. 
In 1609, this was revolutionary, because it meant that the distance between the planets and the Sun changed over time.
This made the people to understand the reason behind seasons and the apparent motion of planets. Without these discoveries, astronomers would have had a much more difficult time trying to explain why the Sun’s influence on Earth ‘changes’ and why the speeds of other planets seem to vary over time.



  • Cosmic Microwave Background Radiation (CMB)

Uniformly defined radiation that fills the Universe was discovered quite accidentally by two Bell Telephone employees in 1964 while working on satellite communications. Since light from an object one light-year away takes one year to reach us, the CMB functions like a snapshot of the Universe. The implications of this discovery were profound, since the uniformity of the radiation appears to confirm the notion that the Universe originated in a single event from which everything else flows. This fact supports the theory of an expanding universe, and therefore, The Big Bang.


  • The Universe Expanding

When Edwin Hubble told the world that the Universe is expanding, it was ground-breaking, to say the least. After tracking the movement of other galaxies, he concluded that they are moving away from us, while also constantly accelerating. He also concluded that most of the nebulae visible in the night sky were actually galaxies. This provided further evidence to support the theory of the Big Bang and changed our conception of the Universe.

  Author :Kashishpreet 

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