Yes, its possible. On normally senses, it is not possible for you to make an update on your facebook post without you typing a word. Normally, if you try posting an empty status, you receive a notification that you post was empty and therefore you need to type in something. But here is a way to update your status with nothing in it on facebook. It's really cool doing this. Here is how it goes

Type in this code and share.

@[0:0#]

Remove # from the above code.