GENERAL KNOWLEDGE

GK

BIG BANG THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Hubble space telescope was placed in Earth’s orbit in 1990 by NASA’s space shuttle.Orbital telescopes like this can be used to study our Sun, and they can also be used to study light from the two Alpha Centauri starts that are 4.3 lightyears away from Earth. ​It takes light about 8 minutes to travel from the Sun to planet Earth, and it takes star light from Alpha Centauri 4.3 years to travel to Earth.How have we used this lightspeed phenomenon to develop the Big Bang Theory?​Note:Think about how we see what happens in the past.
A
Lightyear is the amount of distance that a beam of light travels in one 365 day period.
B
We use telescopes to help us view object that are far away. These optical tools increase magnification so that our eyes can discern the details
C
Humans use telescope technology to measure the speed of light in our local solar system and beyond. We discovered that lightspeed decreased over great distances.
D
Light travels at the same speed everywhere. We use this to “look back into time” at distant objects in our universe.
Explanation: 

Detailed explanation-1: -The Hubble Space Telescope is a large telescope in space. It was launched into orbit by space shuttle Discovery on April 24, 1990. Hubble orbits about 535 kilometers (332 miles) above Earth. It is the length of a large school bus and weighs as much as two adult elephants.

Detailed explanation-2: -The Hubble Space Telescope’s launch and deployment in April 1990 marked the most significant advancement in astronomy since Galileo’s telescope. The first major optical telescope to be placed in space, Hubble operates from the ultimate mountaintop.

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