* Earth's size: Earth is a relatively small planet with a diameter of about 12,742 kilometers (7,926 miles).

* Star sizes: Even the smallest stars are significantly larger than Earth. Our own Sun, a medium-sized star, has a diameter of about 1.39 million kilometers (865,000 miles), which is over 100 times larger than Earth.

* Giants and Supergiants: There are stars much larger than our Sun. Red giants and supergiants can have diameters hundreds or even thousands of times larger than the Sun.

Imagine: If you were to shrink the Sun down to the size of a basketball, Earth would be the size of a pinhead, orbiting about 28 feet away!