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)

When Will Robots Take Over the World?

"In a sense, we're already becoming cyborgs."


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

Is Wine Healthy?

James Hamblin prepares to impress his date with knowledge about the health benefits of wine.

Video

The World's Largest Balloon Festival

Nine days, more than 700 balloons, and a whole lot of hot air

Video

The Origins of Bungee Jumping

"We had this old potato sack and I filled it up with rocks and dropped it over the side. It just hit the water, split, dropping all the stones. And that was our test."

Video

Is Trading Stocks for Suckers?

If you think you’re smarter than the stock market, you’re probably either cheating or wrong

Video

I Spent Half My Life Making a Video Game

How a childhood hobby became a labor of love

Writers

Up
Down

More in Technology

Just In