WHAT IS A SUPER-EARTH?

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It is a class of rocky planets defined by its size. A super-Earth is more massive than our planet - which weighs about 5.9722 × 10^24 kg or 5,9 sextillion kilograms - but lighter than the Gas Giants of our Solar System (Earth has 0,3% of Jupiter’s mass). 

It is not defined by other conditions such as temperature. These planets are candidates to host life as we know, especially the ones twice Earth's size.