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How many planets in our galaxy?

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Doing the math, we can then say that the Milky Way galaxy has – on average – between 800 billion and 3. 2 trillion planets, with some estimates placing that number as high a 8 trillion! However, in order to determine just how many of them are habitable, we need to consider the number of exoplanets discovered so far for the sake of a sample analysis. read more

The Milky Way is a barred spiral galaxy with a diameter between 100,000 and 180,000 light-years (ly). It is estimated to contain 100–400 billion stars. There are probably at least 100 billion planets in the Milky Way. read more

Actually, if the estimates of 40 billion Earth-sized planets in habitable zones of sun-like or red dwarf stars in the Milky Way and the estimate of the 100 billion to 200 billion galaxies in the universe are accurate -- and if the average galaxy has roughly the same number of Earth cousins as the Milky Way, then the chances that we are the only planet with life are more like one in 6 sextillion. read more

Doing the math, we can then say that the Milky Way galaxy has – on average – between 800 billion and 3.2 trillion planets, with some estimates placing that number as high a 8 trillion! However, in order to determine just how many of them are habitable, we need to consider the number of exoplanets discovered so far for the sake of a sample analysis. read more

Of all the planet candidates found to date, nearly 3,000 have been verified AS planets. There are many MORE "possibles" to be studied, and Kepler and other observatories continue to search out more of them in our galaxy. read more

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How many planets are in the Milky Way? Over 50 billion
Source: zmescience.com