Here's why:
* The Sun is a sphere: The Sun is a giant ball of hot gas, shaped like a sphere.
* Stars appear as disks: When viewed from Earth, stars often appear as tiny disks due to the limitations of our telescopes and the vast distances involved. However, this is an effect of our perception, not the actual shape of the stars.
Summary: While stars might appear as disks from our perspective, they are actually spheres. The Sun, being our nearest star, is also a sphere, not a disk.
