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Alien Earths (2009)

Astronomers discover wobbling stars with planets where the ice is hot and the rain is made of iron.


Dana Berry
Nominated for 1 Primetime Emmy. See more awards »




Credited cast:
Alan Boss Alan Boss ... Self
Sara Seager ... Self


Join leading astronomers on a visual journey beyond our solar system in search of planets like Earth. Using CGI animation, we'll explore bizarre worlds that stretch our imagination: planets with iron rain and hot ice, with diamonds everywhere, and endless oceans of gas. Planets with abnormal orbital patterns and planets with no pattern at all that drift alone in the Milky Way. Planets so strange we never could have predicted them before. Could life exist there? Written by Dana Berry

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Planets so bizarre, we never could have imagined them



User Reviews

A voyage to other worlds.
11 May 2016 | by BlueghostSee all my reviews

This is really a fantastic science documentary that explores other "Earth" like or sized worlds, but with very different, and often deadly, environments.

Imagine ice that is hot. Imagine a world where it rains liquid glass, or, if the world is hot enough, liquid aluminum or liquid iron!

Imagine a world tilted on its side so that it's perpetually sunset and sunrise, and one pole is broiling hot, while the other pole on the same world is near absolute zero because it's always in the shade.

Imagine a world where water is so condensed that it crushes to a form of ice with a perfect crystal lattice.

That's what this documentary is all about. Alien Earths provides both CGI and talking heads about worlds that our Earth might have turned out to be, and that actually exist somewhere out there in our own galaxy. And our top astronomers have only scratched the surface of the various kinds of planets that might be nearby in our own galaxy alone.

Incredible stuff. Grab a copy or rent it if you can if you're the least bit curious about planetary science or astronomy. A great watch.


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Release Date:

23 August 2009 (USA) See more »

Company Credits

Production Co:

Skyworks Digital See more »
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Technical Specs

Sound Mix:

Dolby SR



Aspect Ratio:

1.78 : 1 / (high definition)
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