If you can't answer How do you download your pictures from your phone to your computer Then how can humanity or any human in retrospect answer the question to the meaning of life itself?

Answer 1

You don't download pictures from your phone you send them from your phone to your e-mail, if they were taken by the phone and are currently on it. You can only send picture phone pictures to other phones.

And since you don't mean how as in an action taken but you mean how as in the irony of it, which is basically as easy as the person who has life and also has the ability to define a question, having the ability to do both about him or her self.

Define your own life, defining a planet outside of your own life is defining something else. Unless you mean Life as in Existence, because then you would be defining Life AS Existence.