What would happen if we shot iron at the sun. With enough energy provided to get to the surface?
Shooting iron at the sun, even with enough energy to get it to the surface, would not have a significant impact on the sun. The sun is a massive object with a diameter of about 1.4 million kilometers and a mass of about 330,000 times that of the Earth. Iron, on the other hand, is a relatively small and lightweight element.

If we were somehow able to shoot a chunk of iron at the sun with enough energy to get it to the surface, the iron would be quickly vaporized due to the extreme heat and pressure of the sun's atmosphere. The energy released by the vaporization of the iron would be negligible compared to the total energy output of the sun.

Furthermore, the sun is a self-regulating fusion reactor, where the intense heat and pressure at its core drives nuclear fusion of hydrogen into helium, releasing enormous amounts of energy. The addition of a small amount of iron to the sun's outer layers would have no significant impact on this process. In summary, shooting iron at the sun would have no observable effect on the sun's behavior or on the solar system as a whole.