Among thousands, of course, but that’s what makes science fun. Linear virgae are parallel lines that appear on certain icy moons. The following is from the 47th Lunar and Planetary Science Conference (2016):
Introduction: Mysterious linear features (hereafter referred to as linear virgae) appear to be ubiquitous across the outer solar system’s icy satellites and have not been explored in detail. Virgae as described on Titan (Fig. 1) are long (100s of km), linear, slightly darker than surrounding terrains, and may exhibit sharp angles along their trace. Titan’s virgae may be tectonic, but also may be wind-streaks or possible deposits from flood-outflow. Virgae observed on Titan are seen in Cassini VIMS, ISS, and RADAR images. Here we explore virgae across multiple other icy satellites.
Here is part of Figure 1:
Can’t wait to hear what caused these!
