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How many estimated planets are there in the universe?

Answer 1

There may be two-to-three trillion planets in our whole universe.

We are estimating only 5% of the total number of planets, so there may be many more than the above figure, which is only a rough estimation. We are still unable to explore the entire universe.

Consider the Milky Way, which is made up of multiple solar systems with between ten and one hundred planets orbiting each one.

On the other hand, the observable universe contains 100 billion Earth-like planets.

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Answer 2

Claire Anctil

The universe is thought to contain billions, if not trillions, of planets.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.