Stars look smaller than the Sun because they are much farther away from Earth. Although stars are huge, their light gets spread out over a vast distance by the time it reaches us, making them appear as tiny points of light in the sky. The Sun, on the other hand, is much closer to Earth, so it looks much larger and brighter. This difference in distance is why the Sun appears so much bigger compared to the other stars we see.
This question related to Chapter 12 Science Curiosity Class 6th NCERT.
From the Chapter 12. Beyond Earth.
Give answer according to your understanding.