Can you think of any ways that Venus, Earth, and Mars are similar? It’s easier to think of ways they are different.

Venus is close in size to earth, just a bit smaller. Mars is about half their size.

Mars and Earth are closer in temperature in that it only gets up to around 100 degrees Fahrenheit on Mars, not quite as hot as it can get on earth. Venus is more than eight times hotter!

Earth and Mars have a similar day length, around 24 hours. One day on Venus is more like 344 days on Earth.

All of them have iron in their cores, and their crusts — their outer rock — are made up of lightweight rock.