GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A nebula starts to collapse because of:
A
A nearby star shining it’s light
B
A passing spaceship
C
A passing comet
D
Gravity
Explanation: 

Detailed explanation-1: -The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger. Eventually, the clump of dust and gas gets so big that it collapses from its own gravity.

Detailed explanation-2: -Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova.

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