GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or False:Massive stars have LONG lives.
A
False
B
True
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -In general, the larger a star, the shorter its life, although all but the most massive stars live for billions of years. When a star has fused all the hydrogen in its core, nuclear reactions cease.

Detailed explanation-2: -Matter and energy released in supernovae creates all elements in the Universe heavier than iron. The length of a star’s life depends on its mass. High-mass stars have more fuel, but they burn it faster so they have short lives. Low-mass stars have less fuel, but use it at a slower rate, so they live longer lives.

Detailed explanation-3: -Massive stars are classified by having a solar mass that is eight times the size of the sun during its main sequence life cycle stage. Massive stars are huge stars that harbor heavy elements that are vital for the formation of galaxies.

Detailed explanation-4: -No. Stars are born, live, and die. This process is called the “life cycle of a star". Most of the time a star shines, it is in a stage of its life cycle called the main sequence.

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