史考特·赫什伯格: 銀河系的形狀是怎麼來的？

銀河系的形狀是怎麼來的？

一百三十億年前，最終形成銀河系的氣體和塵埃粒子朝各個方向亂飛。儘管星系各部分混亂地運動，整個星系繞著一根軸旋轉。那麼，為什麼銀河系像大多數星系一樣是平坦的，而不是像恆星和行星那樣呈球形？史考特·赫什伯格探索我們銀河係不斷演化的結構。 
[導演：Josh O'Caoimh、Mikai Geronimo，旁白：Addison Anderson、音樂：Salil Bhayani、cAMP Studio]。

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.