You can get this quest by starting a dialog with Ataro Baatar after finishing the quest Ask Ataro. If you decline at first, you can get it later by talking to Vera Novikova.
Ataro Baatar didn't know that Maria was inhabited, but suggests that you go to the Martian Colony with Vera Novikova and talk to Governor Skyrunner.
Take Vera to the Martian settlement and see if an cooperation agreement with the Martians can be reached going forward.
You can fast travel to the Pujan Camp, but be careful! Either go around the camp, or plan your defenses, because the quest will fail if Vera Novikova dies, even if she revives herself.
The quest will be finished when you reach the Martian Colony and a Martian guard spots you. After a short dialog, the quest Looking for the Governor will be started automatically.