If an astronaut landed on a planet composed of antimatter, there would be an explosion and the
A)planet would annihilate.
B)astronaut would annihilate.
C)astronaut and an equal amount of planet antimatter would both annihilate.

Question

Quizplus · Accepted Answer

When matter and antimatter come into contact, they annihilate each other and release energy in the form of gamma rays. Therefore, if an astronaut landed on a planet composed of antimatter, there would be an annihilation event which would result in both the astronaut and an equal amount of planet antimatter annihilating. The planet itself would not necessarily explode, but the resulting energy release would likely cause significant damage to the surrounding area.

If an Astronaut Landed on a Planet Composed of Antimatter