Mercury

Mercury is accessed by clicking the green button inside of the UFO that spawns in the volcano area on earth, you have to fly into it to get in it.

Mercury
Mercury is a very small platform thats grey, it has a small tower and a igloo esque thing where a local alien named Gurhken lives. The Sun is also visible, you can use the rocket there to fly into it and teleport to The Sun.

Doges
Mercury Doge: Mercury doge is hiding at edge of the platform, you have to click him and then bring him to the alien to get the badge.

Humpty dumpty Doge: He is sitting ontop of the tower (i think, he was invisible for me so i dont really know), touch him to get the badge.