Winnipeg Free Press - PRINT EDITION

Martian rock billions of years old

  • Print

LOS ANGELES -- Scientists are abuzz about a coal-coloured rock from Mars that landed in the Sahara Desert: A year-long analysis revealed it's quite different from other Martian meteorites.

Not only is it older than most, it also contains more water. The baseball-size meteorite, estimated to be two billion years old, is strikingly similar to the volcanic rocks examined by the NASA rovers Spirit and Opportunity on the Martian surface.

"Here we have a piece of Mars that I can hold in my hands. That's really exciting," said Carl Agee, director of the Institute of Meteoritics and curator at the University of New Mexico who led the study published online Thursday in the journal Science.

Most space rocks that fall to Earth as meteorites come from the asteroid belt, but a number can be traced to the moon and Mars.

Scientists believe an asteroid or some other large object struck Mars, dislodging rocks and sending them into space. Occasionally, some plummet through Earth's atmosphere.

Short of sending a spacecraft or astronaut to the red planet to haul back rocks, Martian meteorites are the next best thing for scientists seeking to better understand how Earth's neighbour transformed from a tropical environment to a frigid desert.

Researchers performed a battery of tests on the meteorite -- nicknamed "Black Beauty" -- and based on its chemical signature confirmed it was blasted to Earth from Mars. More tests are underway to determine how long the rock floated in space and how long it had been sitting in the Sahara.

 

-- The Associated Press

Republished from the Winnipeg Free Press print edition January 4, 2013 A18

Fact Check

Fact Check

Have you found an error, or know of something we’ve missed in one of our stories?
Please use the form below and let us know.

* Required
  • Please post the headline of the story or the title of the video with the error.

  • Please post exactly what was wrong with the story.

  • Please indicate your source for the correct information.

  • Yes

    No

  • This will only be used to contact you if we have a question about your submission, it will not be used to identify you or be published.

  • Cancel

Having problems with the form?

Contact Us Directly
  • Print

You can comment on most stories on winnipegfreepress.com. You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

You can comment on most stories on winnipegfreepress.com. You can also agree or disagree with other comments. All you need to do is be a Winnipeg Free Press print or e-edition subscriber to join the conversation and give your feedback.

Have Your Say

New to commenting? Check out our Frequently Asked Questions.

Have Your Say

Comments are open to Winnipeg Free Press print or e-edition subscribers only. why?

Have Your Say

Comments are open to Winnipeg Free Press Subscribers only. why?

The Winnipeg Free Press does not necessarily endorse any of the views posted. By submitting your comment, you agree to our Terms and Conditions. These terms were revised effective April 16, 2010.

letters

Make text: Larger | Smaller

LATEST VIDEO

Maurice Leggett on his three interceptions vs. Alouettes

View more like this

Photo Store Gallery

  • A gaggle of Canada geese goslings at Woodsworth Park in Winnipeg Monday- See Project Honk Day 05- May 07, 2012   (JOE BRYKSA / WINNIPEG FREE PRESS)
  • JOE.BRYKSA@FREEPRESS.MB.CA Local-(Standup photo)- Humming Around- A female ruby -throated hummingbird fly's through the bee bomb  flowers Friday at the Assiniboine Park English Garden- Nectar from flowers are their main source of food. Hummingbirds wings can beat as fast as 75x times second. Better get a glimpse of them soon the birds fly far south for the winter - from Mexico to South America- JOE BRYKSA/WINNIPEG FREE PRESS- Sept 10, 2009

View More Gallery Photos

Poll

Do high-profile endorsements for political candidates influence your voting decisions?

View Results

View Related Story

Ads by Google