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What is the largest planet in the universe? In our galaxy? In our solar system? How do they compare in size?

Answer 1

Largest solar planet is Jupiter of size (diameter) 139822 km.
Largest in our galaxy Milky Way is supposedly HD100546 b of size about 7 times Jupiter's. No data now, for beyond Milky Way..

The exoplanet HD 199546 b, which is in orbit around HD 1000546,

The Hilky Way galaxy is thought to be the biggest known galaxy.

6.9 times larger than the largest planet in our solar system, Jupiter, is an exoplanet.

solar system; it is located roughly 320 light years from us.

See Wikipedia, HD 1000546.

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Answer 2

Ian Aitchison

In our galaxy, DENIS-P J082303.1-491201 b is the largest known planet. In our solar system, Jupiter is the largest planet. In comparison, DENIS-P J082303.1-491201 b is estimated to be about 28.5 times the mass of Jupiter, making it significantly larger. Nevertheless, the vastness of space makes it difficult to determine the largest planet in the universe.

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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.