A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Credit: MARK GARLICK/SCIENCE PHOTO A super-Earth planet ... of the habitable zone, orbits at 0.72 astronomical units (108 million km/67 million miles) from our sun. The climate on such a world ...

Earth's orbital eccentricity is 0.017; Mars' is 0.055, and Mercury's is 0.206. HD 20794d's orbit is more elongated than any planet in our solar system , with an eccentricity of 0.4.

When you buy through links on our articles, Future and its syndication partners may earn a commission. A super-Earth planet that dips in and out of its star's habitable zone has been discovered just ...

“We are reaching the end of what we thought was a safe zone for humanity ... surge is a blip or whether it marks a change in Earth’s climate system that means global warming is speeding ...

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An international group of scientists, led by King's College London,has revealed how continued global warming will lead to more parts of the planet ...