Billions years ago, our ancestors gambled and took chance with life!

亿万年前，我们的祖先打了一个赌而且获得了生的机会。

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We are the products of evolution, and not just evolution that occurred billions of years ago.

我们是进化的产物，并且不仅仅是发生在数十亿年前的进化。

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Astrogeologists suspect that these scarps having formed billions of years ago as the planet's surface cooled and shrank.

太空地质学家猜测这些陡坡是在几十亿年前当行星表面冷却收缩时开始形成的。

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Gill used actual topographic maps of Mars to create a vision of what the planet might have looked like billions of years ago.

FORBES: Meteorite Shows Evidence Of Water On Ancient Mars

These observations will go a long way towards refining what we know about quasars, and what conditions were like in the universe billions of years ago.

FORBES: Hubble Telescope Observes Matter Falling Into Black Hole

It will climb the rise, and, as it does so, study rocks that were laid down billions of years ago in the presence of liquid water.

BBC: Nasa's Curiosity rover successfully lands on Mars