American Morning

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December 21st, 2011
08:19 AM ET

Why astronomers are geeking out about NASA discovery of Earth-sized planets

It's being called a cosmic milestone for planet hunters!

For the first time ever, NASA's Kepler space telescope spotted two Earth-sized planets outside our solar system, orbiting a sun-like star. Though scientists say 1,000 light years away and at 800 degrees it's too hot for life, it's still being hailed as an important moment for space research.

This morning on American Morning, Franklin Institute Science Museum chief astronomer Derrick Pitts explains what makes this discovery so important.

Filed under: Space
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