Epsilon Orionis, also known as Alnilam, is a supergiant star with a radius that is about 70 times larger than our Sun.

Here's a more detailed breakdown:

* Radius: 70 times the Sun's radius

* Diameter: 140 times the Sun's diameter

* Volume: Approximately 343,000 times the Sun's volume

While this might sound incredibly massive, it's important to remember that Alnilam is just one star among many in the vastness of space.