Stay Curious

SIGN UP FOR OUR WEEKLY NEWSLETTER AND UNLOCK ONE MORE ARTICLE FOR FREE.

Sign Up

VIEW OUR Privacy Policy


Discover Magazine Logo

WANT MORE? KEEP READING FOR AS LOW AS $1.99!

Subscribe

ALREADY A SUBSCRIBER?

FIND MY SUBSCRIPTION
Advertisement

Why Haven’t Humans Reached Mars?

Our neighboring planet only sits 34 million miles away, so what’s the big hold up?

ByJoshua Rapp Learn
Credit: Gorodenkoff/Shutterstock

Newsletter

Sign up for our email newsletter for the latest science news

Sign Up

In an earlier version of this story, we had stated that Mars was 34 billion miles away, when in actuality, it's only 34 million miles away. We have since fixed this error and apologize for the mistake.

When it comes to interplanetary destinations in our solar system beyond Earth, there isn’t a lot of great options when it comes to weather, conditions, or even simply solid ground. Our near neighbor Venus is so hot we’d burn up before getting anywhere near solid ground. Pluto and breaks the thermometer in the opposite direction with temperatures as cold as -400 degrees Fahrenheit. Meanwhile, Neptune, Uranus, Saturn and Jupiter are mostly made up of toxic gases that would kill us even if they did have solid ground to walk on. And that’s without even mentioning the storms.

Mars is really the only planet that sits within the habitable orbit around our sun. After ...

  • Joshua Rapp Learn

    Joshua Rapp Learn is an award-winning D.C.-based science journalist who frequently writes for Discover Magazine, covering topics about archaeology, wildlife, paleontology, space and other topics.

Stay Curious

JoinOur List

Sign up for our weekly science updates

View our Privacy Policy

SubscribeTo The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Subscribe
Advertisement

0 Free Articles