认为另有一个平行宇宙的概念是很难理解的。

The idea of a parallel universe is hard to grasp.

科学家对宇宙是怎样形成的有分歧。

Scientists disagree about how the universe was created.

向宇宙飞船发出了无线电信号。

A radio signal was sent to the spacecraft.

宇宙慢慢地展现出它的秘密。

The universe is slowly yielding up its secrets.

关于宇宙起源问题，科学家仍进行着激烈辩论。

The question of the origin of the universe is still hotly debated by scientists.

载人宇宙飞行的前景看上去充满了越来越多的变数。

The future for manned space flight is looking increasingly uncertain.

她第一次也是唯一一次宇宙飞行是在去年9月。

She made her first and only space flight last September

美国国家航空航天局计划发射一颗卫星上天，对宇宙射线进行研究。

NASA plans to launch a satellite to study cosmic rays

人类对于宇宙的了解已经大为增加。

Mankind's knowledge of the universe has increased beyond measure

早期的天文学家认为我们的星球是宇宙的中心。

Early astronomers thought that our planet was the centre of the universe.

我们现在有机会去真正解开宇宙的奥秘。

We have an opportunity now to really unlock the secrets of the universe

这是一个人挑战整个宇宙。

This was one man pitted against the universe.