As he turned back the clock, the dust disk collapsed into a dense, bright ring.

模型显示，随着时光倒流，尘埃盘收缩成一个致密的明亮圆环。

youdao

A hole in the dust disk surrounding our solar system would tell alien observers there are planets here, a new simulation shows.

一项最新的模拟实验表明，围绕太阳系的尘埃盘中存在一个空洞，利用这个空洞可以向外星观察者发出信号，告诉它们这里有行星存在。

youdao

Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.

行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。

youdao

The Spitzer team, led by Kate Su of the University of Arizona, Tucson, says the giant cloud of fine dust around the disk is very unusual.

MSN: Wild solar system spotted around distant star?

By comparison, meteors of the type that hit Russia originate at the earliest reaches of time in the disk of gas and dust that swirled around the early sun.

WSJ: Russia Meteor Was Largest in More Than a Century