NASA recently unveiled a new mission to fly to Saturn's moon, Titan, which could potentially host extraterrestrial life. But before it gets there, the space agency has mapped out the celestial satellite for the first time, further showcasing its similarities to Earth.

The map, published in the journal Nature Astronomy, points out six geological features on Titan, including plains, dunes, craters, lakes, "hummocky or mountainous terrains" and other types of terrains. Unlike Earth, the lakes are made of frozen methane instead of water.

"Titan has an active methane-based hydrologic cycle that has shaped a complex geologic landscape, making its surface one of most geologically diverse in the solar system," said Rosaly Lopes, a planetary geologist at NASA's Jet Propulsion Laboratory, in a statement.

NASA UNVEILS NEW MISSION TO FLY TO SATURN'S MOON, TITAN, WHICH COULD BE HOME TO ALIEN LIFE

"Despite the different materials, temperatures and gravity fields between Earth and Titan, many surface features are similar between the two worlds and can be interpreted as being products of the same geologic processes," Lopes added. "The map shows that the different geologic terrains have a clear distribution with latitude, globally, and that some terrains cover far more area than others."

The researchers used data from NASA's Cassini probe, which orbited Saturn for 13 years, whizzing past Titan more than 120 times. Cassini found that approximately 65 percent of Titan's surface is covered by plains and the mysterious lakes are near the moon's north pole.

"The Cassini mission revealed that Titan is a geologically active world, where hydrocarbons like methane and ethane take the role that water has on Earth," planetary geologist David Williams added in the statement. "These hydrocarbons rain down on the surface, flow in streams and rivers, accumulate in lakes and seas, and evaporate into the atmosphere. It's quite an astounding world!"

In September 2017, Cassini made its "death plunge" into Saturn’s atmosphere, ending its 20-year long journey.

SATURN'S MOON TITAN HAS A LAKE WITH FEATURES SIMILAR TO EARTH, COULD SUPPORT LIFE

Titan continues to be a source of fascination for researchers, with some even suggesting it could support life. Earlier this year, NASA announced the latest mission in its New Frontiers program to explore the moon.

Known as Dragonfly, the mission will see a rotorcraft fly "to dozens of promising locations" on Titan after it arrives in 2034, following a 2026 launch.

Titan's atmosphere is four times as dense as Earth's, with NASA likening it to that of early Earth. In April, researchers discovered that lakes on Titan are filled with liquid methane, utilizing data from Cassini. Dust storms were spotted on the celestial satellite in September 2018, which raised the prospect the storms could be a precursor to alien life on the celestial body.

In January 2019, researchers revealed that fresh rainfall had been spotted on Titan in 2016, which caused a reflective feature near the north pole of the moon.

Titan is not the only celestial satellite of Saturn to intrigue scientists. In June 2018, researchers acknowledged that they had found the "building blocks" for life on Enceladus, having discovered complex organic molecules.

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