Do you know Planet Earth? Take the quiz.

NASA
The DSCOVR satellite took this photo on July 6, 2015. It’s the first image of Earth’s entire sunlit side ever taken by DSCOVR, which launched in February 2015 and is a joint project involving NASA, NOAA, and the US Air Force.

You live here, work here, play here, eat here, and sleep here. But how well do you know your native planet?

1. What is Earth's circumference at the equator?

About 2,500 miles

About 25,000 miles

About 250,000 miles

About 2.5 million miles

Javascript is disabled. Quiz scoring requires Javascript.

You've read 3 of 3 free articles. Subscribe to continue.
CSM logo

Why is Christian Science in our name?

Our name is about honesty. The Monitor is owned by The Christian Science Church, and we’ve always been transparent about that.

The Church publishes the Monitor because it sees good journalism as vital to progress in the world. Since 1908, we’ve aimed “to injure no man, but to bless all mankind,” as our founder, Mary Baker Eddy, put it.

Here, you’ll find award-winning journalism not driven by commercial influences – a news organization that takes seriously its mission to uplift the world by seeking solutions and finding reasons for credible hope.

Explore values journalism About us