SpaceX founder and CEO Elon Musk recently revealed its timetable for colonizing Mars: SpaceX plans to send humans to Mars in 2024 and establish a self-maintaining human colony city by 2050.

In order to complete this plan, SpaceX will conduct more spacecraft tests and conduct the first orbital flight test of an interplanetary spacecraft in 2021. Musk’s friendly reminder: Going to Mars is very dangerous and not suitable for the faint-hearted.