It's impossible to say exactly how much of the Moon is currently illuminated by the Sun without knowing the Moon's current phase.

Here's why:

* The Moon's phases: The Moon's appearance changes throughout the month due to its position relative to the Sun and Earth. We see different amounts of the sunlit portion of the Moon depending on its phase (New Moon, Waxing Crescent, First Quarter, etc.).

* Continuous change: The amount of the Moon illuminated by the Sun is constantly changing as the Moon orbits the Earth.

To find out how much of the Moon is currently illuminated, you can:

1. Check a moon phase calendar: Many websites and apps provide moon phase information.

2. Look at the moon yourself: The shape of the moon will give you a good visual indication of how much is illuminated.

Let me know if you have another question!