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It is based on their size, mass and density.

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Which other planet in the solar system closest in size to the earth?

Venus is closest to the Earths size and mass - often referred to as Earths sister or twin planet. Venus' Mass is around 82% of Earths, while its diameter is a little smaller than Earths at around 95% of Earths diameter.


What is earths twin?

"Earth's twin" is often used to refer to Venus due to their similar size, mass, and proximity to the Sun. However, Venus has a much different atmosphere, with extreme temperatures and a dense cloud cover of sulfuric acid.


What planet is considered Earth's sister planet and why?

Venus is considered Earth's sister planet because of its similar size, mass, and composition. It is also located relatively close to Earth in the solar system. Additionally, Venus and Earth are often referred to as sister planets because of their comparable gravity and proximity to the Sun.


Which planet do scientists call earths twin sister and why?

Venus is often referred to as Earth's twin sister because of its similar size and composition. Both planets are rocky, have a similar mass, and share a similar distance from the sun. However, Venus has a thick atmosphere of carbon dioxide that causes extreme temperatures and crushing surface pressure, making it inhospitable for life as we know it.


Why is Venus called a twin?

Venus is called the Earth's Twin because Venus is almost the same size as Earth, only with a different about 5%. Venus has a metal core, and earth has a metal core, too.This is pretty much where the similarities end.