There Are Billions of Earths in our Galaxy

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According to new research, there could be as many as six billion Earth-like planets orbiting stars in our galaxy.

Our Milky Way has as many as 400 billion stars, with seven per cent of them being G-type. That means less than six billion stars may have Earth-like planets in our Galaxy.

6 billion Earth-like planets in our galaxy, 6 billion earth in galaxy
There are 6 billion Earth-like planets in our galaxy. Picture: NASA

By definition, Earth-like planets must be roughly the size of our planet and also be located in the habitable zone of their host star system — the distance at which a planet has the potential to hold liquid water, and therefore life.

Estimating how common different kinds of planets are around different stars can provide important constraints on planet formation and evolution theories, and help optimize future missions dedicated to finding exoplanets,” Michelle Kunimoto, and UBC researcher and co-author, said in the statement.

Kunimoto and collaborators used an algorithm to compare lists of planets previously detected by NASA’s planet-hunting Kepler space telescopes to ones that popped up when populating potential exoplanets orbiting stars found by Kepler.

The researchers also looked at the “radius gap” of exoplanets, which is the fact that it’s unlikely for planets that orbit their star in less than 100 Earth days to be between 1.5 and two times that of Earth.

They found that the range of orbital periods represented by the “radius gap” was actually much narrower than previously thought, which could help us fill the gaps in our understanding of how planets evolve over time. More space and astronomy news on Strange Sounds and Steve Quayle. [APJ, University of BC, Futurism]

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5 COMMENTS

  1. Isaiah 34:4: The stars will fall like fruit from a fig tree, and the Universe will be rolled up like a scroll.

    In a twinkling of an eye, it will all be over.

  2. Strange sounds i did quote that every stars has its own planets and every planets has its own sun’s? I told many months ago that we are not alone in the universe. There are many species are watching us as we watch them?

  3. yes, but when they the other species watch us and understand we are way too immature and dangerous to associate with.

  4. Stop with that nonsense. There are not millions of other planets, there is no space. The earth is flat, so many people know that already. Globe earth may be the biggest lie ever.

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