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Are we alone in the universe?

So just how many of these planets could support life?

We now know of 1000’s of planets that orbit stars outside our solar system…but how many could support life? See how scientists from a variety of fields are working on this question. There’s never been a better time to ponder this age-old question. We now know of thousands of exoplanets – planets that orbit stars elsewhere in the universe.

So just how many of these planets could support life?

Scientists from a variety of fields — including astrophysics, Earth science, heliophysics and planetary science — are working on this question. Here are a few of the strategies they’re using to learn more about the habitability of exoplanets.

Squinting at Earth

Even our best telescopic images of exoplanets are still only a few pixels in size. Just how much information can we extract from such limited data? That’s what Earth scientists have been trying to figure out.

Read the rest of the story at NASA

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