February 23, 2017 | Amy, Exhibition Developer, Science Museum

I've been fascinated by the discovery of hundreds of different exoplanets over the last few years. Yesterday NASA announced the most exciting find yet - seven Earth-sized planets orbiting one star.

Scientists say these planets might have liquid water at their surfaces. They orbit a faint star 40 light years away, and three of them are in the star's 'habitable zone' where life might be possible.

We're just starting to learn about these other worlds. The next step is to use new telescopes to look for signs of water. I wonder what we'll find...

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The seven planets in the Trappist-1 system orbit very close to their parent star and to each other.

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Image: NASA/JPL-Caltech/R Hurt (IPAC)

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