if a planet were to collide with another planet making a planet crash into the sun and the sun expanded due to collision what would happen?

If a planet were to collide with another planet and eventually crash into the sun, the resulting events would be catastrophic. Here's an explanation of what would happen:

1. Colliding planets: When two planets collide, the impact would release an enormous amount of energy, causing massive destruction. The collision would result in the fragmentation and vaporization of both planets, creating a cloud of debris.

2. Debris falling into the Sun: As the debris from the collision enters the Sun's gravitational pull, it would eventually fall into the Sun. However, due to the Sun's immense heat and powerful radiation, the debris would be subjected to extreme temperatures, melting, and eventually vaporizing.

3. Expansion of the Sun: The addition of the planetary debris to the Sun would cause an increase in mass. According to the laws of physics, an increase in mass would lead to an expansion of the Sun. This expansion, however, would depend on the amount of mass added and how it distributes within the Sun.

4. Effect on the Sun's stability: The increased mass and expansion of the Sun would cause significant changes in its internal dynamics. The additional mass could alter the balance between gravitational forces and the internal pressure generated by nuclear fusion reactions within the Sun's core. This could result in an imbalance and potentially destabilize the Sun.

5. Altered life cycle and potential supernova: Depending on the scale of the collision and the subsequent changes to the Sun's stability, its life cycle might be altered. A destabilized Sun could potentially exhaust its nuclear fuel more quickly, leading to an accelerated evolution. In extreme cases, this could even trigger a supernova, an incredibly powerful explosion that would destroy the entire solar system.

It's important to note that such a cataclysmic event is highly unlikely in reality, as the distances between celestial bodies in our universe are vast, and planetary collisions are extremely rare. This example serves as a hypothetical scenario rather than a realistic possibility.