My student creates an illusion of the Milky Way Galaxy what should be placed at the center of the Galaxy Milky Way galaxy on this little straight for the star or plan to have black hole or solar system

It depends on the overall objective and accuracy you want to achieve in the creation of the Milky Way galaxy illusion. Below are a few options you can consider:

1. Central Star: The most accurate representation would place a bright star at the center of the galaxy. However, it is important to note that there is no specific star at the center of the Milky Way. Instead, there is a supermassive black hole called Sagittarius A*.

2. Supermassive Black Hole: To incorporate scientific accuracy, you can place a black hole at the center. Sagittarius A* would be the most accurate representation. This could be depicted as a dark, dense object with gravitational waves or other visual representations typically associated with black holes.

3. Solar System: Alternatively, you can place a representation of our solar system at the center of the galaxy. This would include the Sun (with planets orbiting around it). However, it is important to note that our solar system is just a tiny part of the Milky Way and would not accurately represent the galactic center.

Ultimately, the decision depends on the intention behind creating the illusion, whether it is for educational purposes or as a creative art project.