How many stars are there in the universe?

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150 billion trillion stars

200 billion trillion stars

250 billion trillion stars

300 billion trillion stars

answer is B.

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Detailed Solution

Concept: It is impossible to count all the stars since it would take a very long period. The simplest method to establish how many turn planets there are in the universe is to look for typical stars in galaxies. likewise the quantity of galaxies in the universe. By applying this concept, we will find the solution to this question.
Astronomers must first estimate the number of galaxies in the cosmos before determining the number of stars.
They count all the galaxies they can see in the incredibly detailed photos they capture of tiny regions of the sky.
The total number of photos required to capture the whole sky is then multiplied by that amount.
The response: The cosmos contains around 2 trillion galaxies, or 2,000,000,000,000.
As a result, choice (2) is the best one.

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