Mars

Mars is the second planet in the progression. In order to get to Mars, you will need a tier 2 rocket which required a tier 2 rocket schematic. This schematic can be found in a moon dungeons with 50% chance of tier 2 rocket schematic and 50% chance moon buggy schematic. One the schematic is obtained, you can add it to the NASA workbench and craft a tier 2 rocket.