Picture of the Day: Ophir Chasma in Mars's Valles Marineris

More

0901Pic.jpg

Valles Marineris is an enormous canyon system formed by erosion that cuts more than 3,100 miles through the surface of Mars. The Viking 1 spacecraft mapped the Valles Marineris and returned images like the one embedded above, which shows the Ophir Chasma, the northern most valley in the system. To give you a sense of scale, the large impact crater found in the lower-right corner of the image is nearly 19 miles across.

"Ophir Chasma is a large west-northwest-trending trough about 62 miles, or 100 km, wide," according to NASA. "The Chasma is bordered by high-walled cliffs, most likely faults, that show spur-and-gully morphology and smooth section. The walls have been dissected by landslides forming reentrants. The volume of the landslide debris is more than 1,000 times greater than that from the May 18, 1980, debris avalanche from Mount St. Helens."

View more Pictures of the Day.

Image: NASA.

Jump to comments
Presented by

Nicholas Jackson is a former associate editor at The Atlantic.

Get Today's Top Stories in Your Inbox (preview)

Why Are Americans So Bad at Saving Money?

The U.S. is particularly miserable at putting aside money for the future. Should we blame our paychecks or our psychology?


Elsewhere on the web

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register. blog comments powered by Disqus

Video

The Death of Film

You'll never hear the whirring sound of a projector again.

Video

How to Hunt With Poison Darts

A Borneo hunter explains one of his tribe's oldest customs: the art of the blowpipe

Video

A Delightful, Pixar-Inspired Cartoon

An action figure and his reluctant sidekick trek across a kitchen in search of treasure.

Video

I Am an Undocumented Immigrant

"I look like a typical young American."

Video

Why Did I Study Physics?

Using hand-drawn cartoons to explain an academic passion

Writers

Up
Down

More in Technology

Just In