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We frequently hear about some discoveries of exoplanets like our Earth, or of Earth

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twins.

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How common are Earth-like habitable planets in the universe?

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The short answer is we have no idea how common they are because it's at the edge of our technology

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to even detect an Earth-sized planet in around a Sun-like star with an Earth-like orbit.

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And so we're just at the edge of being able to detect planets like that.

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Even once we detect a planet like that, we don't have the technology to determine whether

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there's water on the planet or not.

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We can't tell whether there are continents, we don't know what its rotation rate is.

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And so we're just beginning to measure the very basic parameters of whether a planet

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is Earth-like.

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Does it have the same kind of orbit as the same size?

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And does it orbit a star like the Sun?

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So that really doesn't answer the question of how common are Earth-twins.

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I suspect over the next 30 or so years we'll develop that technology, and I think what

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we're going to find is that there are going to be planets that look increasingly like Earth,

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but then it allows us to answer the real question we want is, is there life out there?

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And my suspicion is, my prediction is, what we will find is that we'll find planets that

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look increasingly like Earth, but there's going to be very little or no life on any of those

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planets until effectively you get something that looks almost exactly like Earth, and that's

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going to be a sign that God has created life somewhere else as well.

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So let's go.

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So let's go.

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So let's go.