GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Choose the statement that best describes a characteristic of a nebula.
A
A nebula is at the center of the solar system.
B
A nebula forms halfway through a star’s life cycle.
C
A nebula has the coolest temperature of any component in space.
D
A nebula is a region of the galaxy where stars are formed.
Explanation: 

Detailed explanation-1: -Star-Forming Nebula These knots contain sufficient mass that the gas and dust can begin to collapse from gravitational attraction. As it collapses, pressure from gravity causes the material at the center to heat up, creating a protostar. One day, this core becomes hot enough to ignite fusion and a star is born.

Detailed explanation-2: -A nebula is a cloud of dust and gas, usually tens to hundreds of light years across. A galaxy is much larger-usually thousands to hundreds of thousands of light years across. Nebulae are one of the many things that galaxies are made of, along with stars, black holes, cosmic dust, dark matter and much more.

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