Who was the first Martian immigrant?

The first Martian immigrant from the earth may not be a human, but a plant. In 2007, NASA plans to launch a "reconnaissance" spacecraft to send Arabidopsis thaliana with jellyfish luminescent genes to Mars.

Arabidopsis thaliana was chosen for the experiment because it has three advantages: its plants are short and can be placed in small greenhouses; Its life cycle is not long, only six weeks; Its entire genome has been deciphered. For the same reason, the "independent experiment" of the International Space Station also uses it to study the response of plants to microgravity. )