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Another Shiny Object Seen In Pictures From Mars Is Now Explained

Last week, a blogger at Universe Today began a bit of an Internet frenzy when a reader spotted a shiny object in one of the pictures taken on Mars by the Curiosity rover.

There it was, a piece of what looked like shiny metal sticking out from a rock. It's not the first time the Mars rover Curiosity had spotted a shiny object. The last time around — back in October — a very small, plastic-looking object created the same kind of speculation. (Could it be?) It turned out it, the plastic looking thing was likely a piece of the spacecraft that dropped the rover off in Mars.

Today, NASA sent an analysis of the latest image from Ron Sletten, a team collaborator who studies soils at the University of Washington.

No, Sletten said, this is not a piece of debris from an alien spacecraft. It's actually a piece of rock that is more resistant to erosion than the rock it's embedded in.

"The rock on top of the projection is likely more resistant to wind erosion and protects the underlying rock from being eroded," he writes. "The shiny surface suggests that this rock has a fine grain and is relatively hard. Hard, fine grained rocks can be polished by the wind to form very smooth surfaces."

In some ways, said Sletten, it's a lot like what happens to rocks in Antarctica.

Sletten put together a slideshow that explains his thinking:

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NPR

Opulent And Apolitical: The Art Of The Met's Islamic Galleries

Navina Haidar, an Islamic art curator at the Met, says she isn't interested in ideology: "The only place where we allow ourselves any passion is in the artistic joy ... of something that's beautiful."
NPR

Here's The Buzz On America's Forgotten Native 'Tea' Plant

It's called yaupon. Native Americans once made a brew from its caffeinated leaves and traded them widely. With several companies now selling yaupon, it may be poised for a comeback.
WAMU 88.5

Fannie Lou Hamer and the Fight for Voting Rights

Kojo explores the life and legacy of Fannie Lou Hamer, a poor Mississippi sharecropper who became an outspoken voice in the civil rights movement and the fight for voting rights.

WAMU 88.5

Computer Guys and Gal

Chrysler recalls cars to boost their cybersecurity. Microsoft debuts its new Windows 10 operating system. And navigation tech could bring us robotic lawn mowers. The Computer Guys and Gal explain.

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