Either Venus, or a weather balloon.
The V is where the two trails from your two main engines converge in the distance.
You did do a 180 right? The trails dissipate and your V did disappear.
Well, Helium is a chemical element, so I guess technically it is a trail of a chemical.So... that a chemtrail [alien]
Well, Helium is a chemical element, so I guess technically it is a trail of a chemical.
A trail of helium shouldn't really be visible, but super heated helium plasma would probably glow a bit.