Hey, how'd they get those men on Mars?

Join Our Community of Science Lovers!

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American



On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


When Curiosity landed three weeks ago today, many news stories were quick to point out it is the biggest rover to date. They said it's car-sized. But what does that mean - are we talking a Hummer or a Mini? And how did its predecessors measure up? While snooping around NASA's Mars mission sites, I found these gems. Why they didn't get more traction in the media when Curiosity landed, I'll never know. But if it's our job here at Symbiartic to point out images in the service of science that excel for one reason or another, well, I'd be remiss if I didn't pull these out of the NASA archives to share with you.

Meet your Mars Rovers:

Now, astute readers will wonder how NASA took this photograph since the actual rovers are hundreds of miles apart on the Martian surface and were constructed over the course of a decade. Pictured here are the earth-bound, test-rover "cousins" of the true rovers: Sojourner (the shrimpy one, front and center), Spirit & Opportunity (mid-sized, respectable), and Curiosity (now, that's a rover!). But that is immaterial - what matters is that this image shows context and context draws people in. That's why I like the following image even better. The addition of people for scale is a simple trick, but it never gets old. In essence, you're relating the information in the photo back to the viewer. And let's face it - we never get old, do we!? (Insert New Yorker cartoon with caption, "Tell me more about me, dahlingk!")

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe