Vote on the Best Tagline for My New Book - Dark Space Universe (Book 1)

I need a tagline for my new book, and I'm torn about which one to use, so I'm going to put it to a vote. Tell me which one you like best!

1- A MISSION TO THE COSMIC HORIZON AND BEYOND...

2- THE UNIVERSE IS DARKER THAN WE THOUGHT...

3- 300 MILLION SCIENTISTS ARE GOING TO THE COSMIC HORIZON TO LEARN THE SECRETS OF THE UNIVERSE

4- A MISSION TO THE COSMIC HORIZON DISCOVERS AN EVIL AS OLD AS TIME

make a survey