How close do Earth and Mars get?

Mars and Earth are like two cars on a racetrack as they journey around the Sun. Earth is on the inside track and travels faster than Mars, which is on the outside. When Earth laps Mars about every two years, it comes as close as 35 million miles (56 million km) or as far away as 63 million miles (101 million km) because of Mars’ highly elongated orbit.

HubbleSite and STScI are not responsible for content found outside of and

Next question: What is a comet?

Previous question: How thick are Saturn's rings?

See all questions and answers on one big page.

Return to question list for Solar System

Return to FAQ home