(ORDO NEWS) — Astronomers estimate that there may be more than 100 billion Earth-like worlds in the Milky Way that could support life. Think it’s a big number? This is, of course, if there is only one universe.
Experts believe that there are about 400 billion stars in our Milky Way galaxy, but some astrophysicists believe that there are a trillion stars in our galaxy. If so, this means that there could be 100 billion planets in the Milky Way on which life could exist.
Because astronomers can’t see our entire galaxy, they can’t know exactly how many planets might have life. Therefore, experts calculate the mass of our galaxy and calculate how much of this mass the stars make up. Based on these calculations, scientists believe that there are at least 400 billion stars in our galaxy.
According to some calculations, the Milky Way may contain, on average, from 800 billion to 3.2 trillion planets on which life is possible. However, some experts believe that this number could be as high as eight trillion.
In addition, if we turn to the data of NASA scientists, it turns out that about 1,500 of the above planets are located within a radius of 50 light years from the Earth.
These conclusions are based on observations made over a period of 6 years by the Anomaly Lensing Network, founded in 1995. The researchers concluded that there are far more Earth-sized planets than Jupiter-sized planets. In 2013, Dr. Phil Yock of the Department of Physics at the University of Auckland said:
Kepler finds Earth-sized planets that are fairly close to their host stars, and astronomers estimate there are about 17 billion such planets in the Milky Way. These worlds are much hotter than our planet, although some of them may be at similar temperatures (and therefore habitable) if they orbit a cold star called a red dwarf.
“Our proposal is to measure the number of Earth-mass planets orbiting stars at distances typically twice the distance from the Sun to Earth.
Therefore, our planets will be colder than Earth.” The Kepler and MOA results give us a good estimate of the number of Earth-like planets in the Milky Way. We predict that the number of such planets will be about 100 billion.”
In June 2017, NASA announced the discovery of ten new planets outside our solar system that are likely to be the same size and temperature as Earth and could host life.
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