# Bubble streams in Titan's seas as product of liquid N2-CH4-C2H6 cryogenic mixture

## TL;DR

This study models the formation of nitrogen bubbles in Titan's seas, suggesting that nitrogen exsolution from cryogenic N2-CH4-C2H6 mixtures could explain observed radar-bright features, advancing understanding of extraterrestrial liquid bodies.

## Contribution

The paper introduces a numerical model combined with experimental data to explain the formation of nitrogen bubbles in Titan's seas, a novel approach in planetary cryogenic liquid studies.

## Key findings

- Nitrogen exsolution is likely at Titan's Ligeia Mare bed.
- Produced bubbles could be centimeter-sized and radar-detectable.
- Model explains ephemeral bright features observed by RADAR.

## Abstract

Titan, Saturn's largest moon, is the only extraterrestrial body known to support stable liquid on its surface, in the form of seas and lakes that dot the polar regions. Many indications suggest that the liquid should be composed of a mixture of N2, CH4 and C2H6. Recent RADAR observations of Titan's large sea, called ``Ligeia Mare'', have shown unexplained and ephemeral bright features, possibly due to rising bubbles. Here we report that our numerical model, when combined with experimental data found in the literature, shows that Ligeia Mare's bed is a favourable place for nitrogen exsolution. This process could produce centimeter-sized and radar-detectable bubbles.