The city of New York as seen from the ISS
NASA  "Multi-star systems are widespread, and about 50 % of the stars have binary companion stars. So this study can be applied to a large number of solar systems, "said Gongjie Li, co-researcher of the study and assistant professor at the Georgia Tech School of Physics.
The researchers first studied how the Earth is The slope of Mars similar to the inclination of Mars, they found that our relatively small slope changes help make the Earth a great place to start and thrive, while the much more extreme variations of Mars helped destroy its atmosphere
Then they looked at how the Earth could develop when it is in the system known as Alpha Centauri AB, which is the neighbor of our solar system, and a binary system made up of two stars which are known as "A" and "A." B ". The news was pessimistic in this system and offered bad news to those planning to send a space probe to the system, hoping to find someone else's life.
"We simulated how other binary files with multiple star mass variations would be orbital squalums," said Billy Quarles, principal investigator of the study and researcher in Li's lab. "The overall message was positive, but not for our nearest neighbor."
The researchers then looked further into the universe. The results were more positive for alien life as they looked further out, as the study showed that gentle variations like Earth's were far more likely to look deeper into the cosmos.
"In general, the distance between the stars is greater In binary systems, the second star has less impact on the Earth model, the planet's own momentum dynamics dominate other influences, and the slope usually varies less," Li said quite optimistic. "
The new study "Obliquity Evolution of Circumstellar Planets in Sun-like Stellar Binaries" was published today in the Astrophysical Journal. It was funded by the Nasa Exobiology Program.
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