Question

why is venus known as 'earth's twin'

Answer 1

Venus is known as the earth's twin because both planets look almost alike. Venus and Earth are almost the same size, they have about the same mass and shape, and have a very similar composition . They are also close to each other. Thus Venus known as 'earth's twin'.

Answer 2

Venus is  called Earth's twin because both are of the same size,their weight is  same, and have  and are made of the same material. They are also neighboring planets.