Why go to Mars instead of anywhere else?

1. Because Mars is the closest solid planet to the Earth, it is the easiest choice for human beings to "immigrate" to Mars in the future.

2. However, Mars is smaller in size and mass than the Earth, resulting in no atmosphere like the Earth, with a large temperature difference between day and night and a low average temperature, which is not suitable for human habitation at present. Therefore, scientists are trying to study Mars, trying to transform it into a livable planet, studying the past of Mars and looking for evidence of whether there was life, which is an important clue to study the origin and future evolution of life on earth.