Confused
I learned during my degree a ton of stuff about Mercury and its tectonics, how its planetary surface raises and falls with the gravity pull from the sun etc.
So how come they have come out now and said this? I learned it back in 96 - 99. Are you telling me my Earth Science Professor lied???? We also covered Mars which has since been proven thanks to the laser wielding robot.
And if memory serves the surface has risen and fallen by miles, so a few "scarps" doesn't equate immediately to tectonic movement but could be gravitational pull.