The Dark Twin is shown opposite the Earth, identified not only by being on the opposite side of the Sun but by the counterclockwise orbitdirection that they both assume.
黑暗双星显示于地球的对面，这不仅可以从它在太阳对面看出来，还有它和地球都采用的逆时针轨道方向。
2
Under the control of the Sun's gravitational force, each planet maintains an elliptical orbit and all of them travel in the same direction.
在太阳引力的控制下，每个行星都维持在一条椭圆形的轨道上，并按照相同的方向移动。
3
The eight planets of our solar system orbit in the same direction along what's called the ecliptic, a flat plane that's nearly aligned with the sun's equator.