Notifications

Photos

Curiosity rover photographs thigh bone-shaped rock on Mars

NASA's Curiosity rover photographed an object on Mars last week that bore an uncanny resemblance to a femur or thigh bone. See some other amazing photos taken by NASA's rovers on Mars so far this year.

Red Planet never had enough oxygen to support complex animals with bones, NASA says

NASA's Curiosity rover photographed an object on Mars last week that bore an uncanny resemblance to a femur or thigh bone.

But it's just a rock, the U.S. space agency says.

"If life ever existed on Mars, scientists expect that it would be small simple life forms called microbes," NASA said in the caption for the image. "Mars likely never had enough oxygen in its atmosphere and elsewhere to support more complex organisms. Thus, large fossils are not likely."

Mission scientists believe the rock was sculpted into its unusual shape by wind or water erosion. 

Comments

To encourage thoughtful and respectful conversations, first and last names will appear with each submission to CBC/Radio-Canada's online communities (except in children and youth-oriented communities). Pseudonyms will no longer be permitted.

By submitting a comment, you accept that CBC has the right to reproduce and publish that comment in whole or in part, in any manner CBC chooses. Please note that CBC does not endorse the opinions expressed in comments. Comments on this story are moderated according to our Submission Guidelines. Comments are welcome while open. We reserve the right to close comments at any time.