To date, astronomers have discovered about 2,000 extrasolar planets in our galaxy.
The Galactic Atlas is a research and publishing project of the International Cosmographic Society which aims to create a map of all the known planetary systems of our galaxy.
Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are staggering: The Milky Way is estimated to contain about 400 billion stars and a minimum of 100 billion planets —and many of those could be habitable.
NASA estimates 1 billion ‘Earths’ in our galaxy alone. There are one billion rocky planets that are approximately the size of Earth and are orbiting familiar-looking, yellow-sunshine stars like our own sun in the orbital “habitable zone” where water could be liquid at the surface.
The confirmation of the first Earth-like habitable planet will be the greatest discovery of all time.
That is a billion planets where human beings, or their genetically modified descendants, as well as their dogs and cats and tomato plants, could plausibly live.
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