Answer:
his weight would most likely be different in each planet
Step-by-step explanation:
Seeing as since the only actual information provided is that Kevin is transporting himself between two different planets then the most factual statement would be that his weight would most likely be different in each planet. This is because weight is calculated as the amount of gravity on a certain mass with the following formula.
Weight = mass * gravity
Seeing since a planet's gravity can vary drastically from one planet to another depending on their given characteristics. This would also cause Kevin's weight to be drastically different on each planet he transports to.