The true shape of Earth is called an oblate spheroid.

地球真正的形为是扁球形。

Vesta is round… ish, what's called an oblate spheroid, flattened a bit like a ball someone's sitting on.

灶神星是圆的… … 扁球体，有点像人坐着的球。

The night's first moon, an oblate silver coin, hung well above the southern horizon.

夜晚的轮月亮，枚扁圆的银币，高高地悬在南方的地平线上。

And what we see is that it is composed of tiny little oblate structures called melanosomes.

我们看到它是称为黑色素体的微小扁球形结构组成的。

And remember, Saturn is oblate, so as the rings formed they would've felt a gravitational tug from Saturn's equatorial bulge, centering them right over the planet's midline.

记住，土星是扁球形，所以当土星环形成的时候，它会受到来自土星赤道隆起的引力，使之处于土星的中线上。