GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heat
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Light
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Gravity
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Friction
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Detailed explanation-1: -A galaxy is a giant, spinning object made of gas, dust, and stars held together by gravity. Galaxies come in different shapes and sizes and can contain billions of stars. Most occur in groups that are also held together by gravity.
Detailed explanation-2: -First proposed about 80 years ago, dark matter is thought to be the “glue” that holds galaxies together. Astronomers suggest that dark matter provides vital “scaffolding” for the universe, forming a framework for the formation of galaxies through gravitational attraction.
Detailed explanation-3: -Galaxies are held together by the force of gravity. Gravity is an attractive force that exists between all objects with mass. You will be most familiar with gravity as the force that keeps your feet on the ground. It is also the force that keeps the planets orbiting around the Sun and keeps stars orbiting in galaxies.