Yes, the sun is much smaller than Betelgeuse.

Here's a breakdown:

* The Sun: Our sun is a medium-sized star, with a diameter of about 865,000 miles (1.4 million kilometers).

* Betelgeuse: A red supergiant star, Betelgeuse is absolutely enormous. Its diameter is estimated to be between 550 and 950 times larger than the Sun's. That means it could engulf the entire orbit of Mars, if it were placed where our sun is.

Think of it this way: If the sun were a basketball, Betelgeuse would be the size of a large sports stadium!