The problem of two brothers (an unexpected decision).
Ivan: if you apply the theories of curvature of space and time, then depending on the location and speed of the brother, the answer can be any.
At the age of 3, he flew to the constellation of Orion in the direction of Betelgeuse at the speed of light.
He is about 40 years old, and if he accelerates above the speed of light when his brother is 200, he will hit 42.
And he will not be able to fly to Bethelgeuse anyway because it seems to me that yesterday it exploded and created a giant black hole (in 639 years I will buy a telescope and observe this phenomenon).
Andron: Breathe out, take a bath, breathe out.