Titan’s north polar region contains liquid hydrocarbon lakes. These lakes might be the ideal place for life to thrive on the frozen moon, but can we study these environments here on Earth?
NASA/Jet Propulsion Lab/USGS
If you’ve ever wondered what Titan’s hydrocarbon lakes might look like, an asphalt lake in Trinidad may offer a partial answer.
It’s not exactly a scenic spot: hot tar oozes up to the surface, cooling into a patchwork crust, and bubbles of methane and carbon dioxide pop at the surface. But even here, life has a foothold. Within the bubbling hydrocarbon stew, a menagerie of bacteria and archaea feast on heavy hydrocarbons and exhale methane.
This place is not an alien sea, but located right here on Earth. It’s Pitch Lake — a lake of asphalt formed as pitch seeps up from a fault deep beneath the islands of Trinidad and Tobago, mixing with mud and gases on the way. And it may be the closest thing we have to an Earthly analogue for life and its habitat on another world, including Saturn’s largest moon, Titan.
But just how good is this analogy?
Alien landscapes on Earth
