The most likely explanation is that the radio waves had bounced off pools of liquid hydrocarbons.
Some of them looked like they ran on etheline, or some liquid hydrocarbon.
At an operating pressure of 800 psig, the liquid hydrocarbon may be only 6 to 10 times as dense as the gas.
Oil, on the other hand, is made up of liquid hydrocarbons and other minerals.
Scientists also think that there are liquid hydrocarbons on Titan, but a better name is "lakes", not "seas".
It is composed of liquid hydrocarbons (mainly methane and ethane).
But we got lots o' liquid hydrocarbons round the place.
For example, the solubility of noble gases in liquid hydrocarbons increases with increasing temperature.
Shows great tendency to readily produce liquid hydrocarbons.
Pipes will pump to the surface the vapors and liquid hydrocarbons that are emitted from the rock.