These little blobs are called planetesimals — wee baby planets.

这些小斑块被称为微行——是婴儿状态。

The researchers wrote that a straightforward explanation for Oumuamua is that it is a planetesimal.

研究人员写道，“最直观的解释是：'奥陌陌’是一颗微行”。

And how does the chaos and turmoil of dust become pebbles, and pebbles become boulders, and boulders become planetesimals?

尘是如何经过风云巨变变成卵石的，卵石是如何变成巨石的，巨石是如何变成子的？

It is classified as a planetesimal — objects that were among the original building blocks of our solar system.

它被归类为子——子是太阳系最初的组成部分之一。

Today, Safronov's planetesimal hypothesis of planet formation is widely accepted, although alternative theories exist.

如今， 萨弗罗诺夫的行形成微行假说已被广泛接受，尽管还存其他理论。

A spherical region at the edge of the solar system containing planetesimals and comets.

位于太阳系边缘的一个球形区域，包含小行彗。

The planets formed from planetesimals that join together by the process of accretion.

行通过吸积过程，由微行聚集而成。

In the model proposed by researchers, it is assumed that Oumuamua began its journey as an icy planetesimal.

研究人员提出的模型中，假设奥陌陌最初是一颗冰质子。

As they grew bigger, the gravity of each particle would cause them to coalesce, forming larger objects called planetesimals.

随着它们体积增大， 每个粒子的引力会使它们聚合，形成被称为子的更大天体。

Dust and gas orbiting our young sun cooled and collided to form a few thousand miniature bodies we call planetesimals.

围绕我们年轻太阳旋转的尘体冷却并相互碰撞，形成了几千个我们称之为子的小型天体。

The giant planets pulled these planetesimals inwards, and in return, Saturn, Uranus and Neptune started slowly edging further away from the Sun.

巨行将这些小天体向内拉，作为回应， 土、天王海王则开始缓慢地逐渐远离太阳。

Some planetesimals were captured by the planets to become moons, others filled stable orbits as Trojans, and some may have entered the asteroid belt.

一些微行被行捕获成为卫，另一些则占据了稳定的轨道成为特洛伊小行，还有一些可能进入了小行带。

But its progress was cut short by a series of hit-and-run collisions with other planetesimals that knocked off the rocky crust until only the core remained.

然而，它的发展被一系列与其他子的碰撞打断，这些碰撞将其岩石地壳剥离，直到只剩下核心。

In 2008, one researcher suggested that Venus may have gotten its weird spin back when it was a wee li'l planetesimal.

2008年，一位研究人员提出，金可能其还是一个小微行时获得了这种奇怪的自转方式。

What makes Psyche so special is that it appears to have been a planetesimal well on its way to becoming a planet, with a rocky exterior surrounding a metal core.

使得赛克丝如此特别的原因于， 它似乎曾经是一个子， 正向行演化，其岩石外壳包裹着一个金属核心。

Planetesimals encountering Jupiter's powerful gravity were fired out to the edge of the Solar System to form the Oort cloud, and this had the effect of shifting Jupiter inwards.

遭遇木强大引力的子被抛射到太阳系的边缘， 形成了奥尔特云，这一过程导致木向内移动。

The ice giants swept through the remaining planetesimal disk, scattering most of it, to create what is known as the Late Heavy Bombardment, which occurred about 4 billion years ago.

冰巨横扫剩余的微行盘，将其大部分散射开来， 从而引发了所谓的晚期重轰炸，这一事件大约发生40亿年前。 数以万计的陨石从外盘被抛射而出， 如雨般倾泻内行上。

Planetesimals were also scattered further out, including the dwarf planets Sedna and Eris, discovered in 2003 and 2005. The NIS model works well for many starting scenarios for the Solar System.

一些微行被行捕获成为卫， 另一些则占据了特洛伊群的稳定轨道， 还有些可能进入了小行带。 微行被散布到更远的地方，包括2003年2005年发现的小行塞德娜阋神。NIS模型许多太阳系起始情景中表现良好。