NASA's Curiosity Rover tagged posts

Mars likely had cold and icy past, new study finds

The study site in the Tablelands of Newfoundland. Photo credit: Anthony Feldman/DRI

A new study finds clues lurking in the Red Planet’s soil. The question of whether Mars ever supported life has captivated the imagination of scientists and the public for decades. Central to the discovery is gaining insight into the past climate of Earth’s neighbor: was the planet warm and wet, with seas and rivers much like those found on our own planet? Or was it frigid and icy, and therefore potentially less prone to supporting life as we know it? A new study finds evidence to support the latter by identifying similarities between soils found on Mars and those of Canada’s Newfoundland, a cold subarctic climate.

The study, published July 7th in Communications Earth and Environment, looked for soils...

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Scientists Propose New Theory that explains Sand Ripples on Mars and on Earth

Photo caption: Waves received in the wind tunnel of Ben Gurion University of the Negev with glass balls with a diameter of 90 microns. Two scales of waves can be seen in the image.
Small waves with a wavelength of centimeters and large waves with a wavelength of about 10 centimeters resemble waves due to the flow of water. The existence of two scales of waves on Mars was discovered by the Mars Curiosity Rover.| Photo: Hezi Yizhaq

Sand ripples are fascinating. They are symmetrical, yet wind — which causes them — is very much not. Furthermore, they can be found on Mars and on Earth. They would be even more fascinating if the same effect found on Mars could be found here on Earth as well. What if one unified theory could explain their formation on two different planets of our solar system?

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NASA’s Curiosity Rover measures intriguing Carbon Signature on Mars

This image shows the Highfield drill hole made by NASA’s Mars Curiosity rover as it was collecting a sample on “Vera Rubin Ridge” in Gale Crater.
 
Credit: NASA/JPL-Caltech/MSSS

The type of carbon is associated with biological processes on Earth. Curiosity scientists offer several explanations for the unusual carbon signals. After analyzing powdered rock samples collected from the surface of Mars by NASA’s Curiosity rover, scientists have announced that several of the samples are rich in a type of carbon that on Earth is associated with biological processes.

While the finding is intriguing, it doesn’t necessarily point to ancient life on Mars, as scientists have not yet found conclusive supporting evidence of ancient or current biology there, such as sedimentary rock formations ...

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