This is easily done through the use of the in-game admin panel, which can be opened by pressing
+
simultaneously, so long as you are the host of the game or have been promoted to admin of the game you are in.
Firstly, you will want to go to custom game and start the "Mars Planet" world on survival. Once you've loaded in, open the admin tools mentioned above and in the drop down menu at the top of the screen select "entity list". This will give you a list of ships, stations, and other points of interest that you can teleport to. Scroll down till you find the one titled "Monolith", select it and at the bottom of the panel click "teleport here". Once at the Monolith press
to back out of spectator mode and your achievement should pop. Hope this helps :)