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Gravitational Force is Responsible for
The formation of stars and other celestial bodies.
The Theory of Relativity is Based on
i) No signal can travel faster than light,
ii)The law of physics are the same everywhere in the universe.
Edwin Hubble Stated
He observed with a 100-inch Hooker telescope and stated ”That all galaxies beyond the milky way are moving away from earth and proved universe expand.”
Hubble Constant
The value of the Hubbels Constant is 73 KM/S MPS.
Red Shift
The wavelength of the light is stretched, so the light is seen as ‘shifted’ towards the red part of the spectrum.
Cosmic microwave background CMB
The phenomena which can detect the echo of the first bang is
Red shift
It is the phenomenon where the light that reaches earth from a distant galaxy undergo a shift towards the red end of the visible spectrum
A close universe
It is the model of the universe where it's shaped like a ball and it's angle is more than 180°
Open universe
It is a model of universe where the universe goes on forever, with no boundary and its angle is less than 180°
A flat universe
It is a model of the universe where the space is flat like a paper and the angle is exactly 180°
Note 
Flashcard (59)