中央恒星的行星状星云 CPN
北极星似乎由一颗脉动的恒星衍变而来。
The Pole Star appears to be changing from a star that pulsates.
一个国际科学家团队发现这颗行星围绕着被称为“比邻星”的恒星运行。
An international team of scientists found the planet moving around the star called "Proxima Centauri".
圆盘产生自己的引力拖曳，这种相互作用的力夺走了行 星在其轨道上的动量，迫使它盘旋向恒星的方向。
The disk exerts its own gravitational tug, and this interplay of forces robs the planet of momentum in its orbital path, forcing it to spiral in toward the star.
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