That's a screenshot of an animation where the grid is moving. The lines don't capture the object. They just nudge it a bit. Kind of like a ball rolling across a

That's a screenshot of an animation where the grid is moving. The lines don't capture the object. They just nudge it a bit. Kind of like a ball rolling across a treadmill. Also that image doesn't show the slight twist in the grid caused by the earth's rotation. Another part of the video does though.