GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How old is the sun
A
17 years
B
About 4.5 Million years
C
2 days
D
10 million years
Explanation: 

Detailed explanation-1: -The Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.

Detailed explanation-2: -The Sun formed 4.5 billion years ago from a cloud of gas and dust that collapsed when a shockwave from a nearby supernova explosion struck it. Over millennia, so much mass aggregated that pressure and heat at its core that nuclear fusion reactions ignited and produced energy.

Detailed explanation-3: -In about 5 billion years, the Sun is due to turn into a red giant. The core of the star will shrink, but its outer layers will expand out to the orbit of Mars, engulfing our planet in the process. If it’s even still there. One thing is certain: By that time, we won’t be around.

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