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Home / Science / NASA says 300 million planets are habitable

NASA says 300 million planets are habitable



More than 4,500 exoplanets have been discovered so far, only a small fraction are thought to have life-bearing properties. A new study shows that the galaxy can actually contain 300 million planet has the ability to support life.

The study analyzed data from the Kepler space telescope and found that about half of the stars with the same temperature as the sun – plus or minus up to 1,500 degrees Fahrenheit – could also be orbited by planets. Crystals have liquid water on their surface.

Lead author of the study, Steve Bryson, said: “Kepler told us that there are billions of planets, but now we know that a good part of those planets could be rocky and possibly rocky. live. “Although this result is far from a final value and water on the planet̵

7;s surface is just one of many life-supporting factors, it’s interesting that we calculate these worlds in common. such high reliability and precision. “

This illustration depicts a possible occurrence of planet Kepler-452b, the first near-Earth-sized world found in the habitable zone of a star similar to our own Sun.  Vendor: NASA Ames / JPL-Caltech / T. Pyle

This illustration depicts a possible occurrence of planet Kepler-452b, the first near-Earth-sized world found in the habitable zone of a star similar to our own Sun. Vendor: NASA Ames / JPL-Caltech / T. Pyle

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The Kepler space telescope, launched in 2009, was decommissioned in 2018 after running out of fuel.

The new study, expected to be published in the Journal of Astronomy, has looked at the relationship between the temperature of the star and the light absorbed by an orbiting planet, expanding the scope of researchers.

Study co-author Ravi Kopparapu said: “We have always been able to simply determine the viability of a planet’s physical distance from a star, so that it is not too hot or too cold, making them I make many assumptions. “Gaia’s data on the stars allows us to see these planets and their stars in a whole new way.”

“Not all stars are the same,” added Kopparapu. “And so are all the planets.”

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In their findings, the researchers also said that there are “at least 4” planets that are habitable within 20 to 30 light-years from Earth. A light year, measuring distances in space, is about 6 trillion miles.

Bryson, a researcher at NASA’s Ames Research Center, adds: “To me, this result is an example of the extent to which we can discover at a glance outside the system. our sun. “What we see is that our galaxy is a fascinating galaxy, with fascinating worlds, and some may not be so different from our own.”

In October, a separate team of researchers discovered that 24 potential “super-habitable” planets may have conditions more suitable for the host’s life.

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