A Planet Left Behind

Mars has been a planet people have wondered about for centuries. The question of "is there life on the red planet" has been asked for years. Rovers have been sent to Mars for years as satelites have flown by searching for life that may have existed centeries ago. The Martians never considered if there was life on other worlds. The Martians believed they were the only people who were created by the Lord.
Living inside the cave safe from the harsh outside world for centuries after century had made the people comfortable. When a strange machine is found on the surface by an ourside Ranger on Mars it is perplexing to the Martians. How could this strange machine be on the planet? It was not made there. The question poses a problem for the Religous order who have taught the Lord only has created Martians.
Anything else is considered herasey. When rumors of other machines found in the past begin to circurlate it poses a problem since the constitution forbids secrets from the population. When a journal from the past is found in a hidden room the contents describe a world where people lived on the surface. A metorite will change their world. This disovery will change Mars and their people as they face the fact there is life on other planets.
Should they try and contact them?