斯科特·赫什伯格: 银河系的形状是如何形成的？

银河系的形状是如何形成的？

130 亿年前，最终成为我们银河系的气体和尘埃粒子在各个方向呼啸而过。尽管这些部分在狂乱地运动，整个星系仍然绕着一个轴旋转。那么，为什么银河系像大多数星系一样变得扁平，而不是像恒星和行星那样是球形的呢？斯科特·赫什伯格（Scott Hershberger）将探索银河系不断演变的结构。[导演：Josh O'Caoimh、Mikai Geronimo，旁白：Addison Anderson，音乐：Salil Bhayani，cAMP 工作室]

Galaxies like the Milky Way are not fixed in form but constantly evolve, shaped by the interplay of angular momentum and gravity. Thirteen billion years ago, chaotic clouds of gas and dust settled into a spinning disc, forming the galaxy’s iconic spiral arms. These arms are not static; they shift as waves of density ripple through, causing stars to migrate in and out. Even now, the spirals may look very different than when Earth first formed, and in five billion years, a collision with Andromeda will transform the Milky Way yet again.