听力文本

The ship would have to be big to carry a huge amount of fuel,
这艘飞船必须能够装载足够的燃料
enough to accelerate it to nearly the speed of light.
以供其接近光速行驶
Getting to just beneath the cosmic speed limit
要使飞船无限接近宇宙极速
would require six whole years at full power.
需要全功率加速运行长达六年

Four
4
Three
3
Two
2
One
1
The initial acceleration would be gentle
由于飞船庞大而笨重
because the ship would be so big and heavy.
起始加速度会很慢
But gradually it would pick up speed and
但会逐渐加速
soon would be covering massive distances.
很快就能航行很远的距离
In just one week, it would have reached the outer planets,
只需一周，就能到达带外行星
gas giants like Neptune.
如海王星一样的气体巨行星
After two years, it would reach half light
两年后，它将加速到光速的一半
speed and be far outside our solar system.
并早已航行到太阳系外很远的地方
Two years later,
再过两年
it would be traveling at 90% of the speed of
速度将会增加到光速的90%
light speed and passing our closet star system, Alpha Centauri.
并掠过离我们最近的半人马座阿尔法星系
Around 30 trillion miles away from the earth,
在远离地球30万亿英里之外
4 years since launch,
自发射起4年后
the ship begins to travel in time.
飞船开始了时间旅行
For every hour of time on the ship, two hours pass on earth,
飞船上一小时，相当于地球上两小时
a similar situation to the spaceship
和环绕特大质量黑洞飞行的
that orbited the massive black hole.
宇宙飞船是同样道理
But there's more to come.
但好戏还在后头

视频及简介

《与霍金一起了解宇宙》纪录片耗时3年多制作，期间霍金曾多次坚持对剧本作大幅修改。霍金指出外星生物在消耗尽自己星球上的资源后便会乘坐大型飞船到他们能够到达的星球掠夺资源，并将那里开拓成为他们的殖民地；如果有外星生物到访地球，那将会像当年意大利航海家哥伦布登陆美洲大陆一样，最后给人类带来毁灭性的灾难。