Titan: Space experts think Saturn's moon could be 'like Earth'
These six infrared images of Titan were created using 13 years of data
Could a moon near Saturn be the most Earth-like planet out there
That's what scientists from Nasa are looking into, as they study Saturn's largest moon - Titan. They're trying to work out how its landscape formed.
They say that Titan has seasons, rains, rivers and even seas. But before you get too excited, it won't be water that is sloshing around, but liquid methane, and the gust winds will be nitrogen!
Planetary experts from the University of Stanford in California - alongside colleagues from Nasa - are studying Titan's landscape closely - as it's seen as a potential place for humans to set up a future base.
This image of Titan allows you to peer through the thick atmosphere
Using information from the Cassini mission, the team have been working on a project to understand how seasonal changes could have shaped a very Earth-like structure of mountains, ice, sand dunes and wide plains rather than just a windy dusty desert.
On Earth, rocks and minerals get eroded by water and end up moving around the planet as tiny grains. They are moved by winds and rivers to new places where they settle and turn back into rocks.
It's pretty fascinating to think about how there's this alternative world so far out there, where th
ings are so different, yet so similar.
Mathieu Lapôtre, Stanford University
Those rocks then continue forming, being eroded, and reforming, over millions of years to form the landscapes we all see.
Experts think the same thing could be happening on Titan - just with very different minerals.
Nasa's Cassini mission spent years studying and taking photos of Saturn and its moons
Cassini mission
Facts about Titan
Titan is 2.5x smaller than Earth
Nasa says that right now it takes seven years to get to Titan - it's roughly a billion miles away!
Titan's air is dense enough that you could walk around without a spacesuit, but you'd need an oxygen mask and protection from the bitter cold.
Saturn's Moon Titan: Another Earth? - Documentary HD
Titan is larger than the planet Mercury and is the second largest moon in our solar system.
Nasa's Cassini mission flew close by Titan 127 times while in Saturn orbit for 13 years.
Mathieu Lapôtre, from Stanford's School of Earth, Energy & Environmental Sciences said: "Our model adds a unifying framework that allows us to understand how all of these sedimentary environments work together.
"If we understand how the different pieces of the puzzle fit together.... then we can start using the landforms left behind... to say something about the climate or the geological history of Titan - and how they could impact the prospect for life on Titan."
?Titan Colonization: Could Saturn's Moon Be A New Earth
https://www.bbc.co.uk/newsround/61244951