Interestingly, according to modern astronomers, space is finite. This is a very comforting thought -- particularly for people who can never remember where they have left things.
You may choose to include some music, if you think/know, that the receiver is able to play it.
Put receiver's email address in the first field. You may supply more than one email address, as long as you separate them by comma. Put your own email address in the second field, eventually type a message to the person, and click "Send".