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Alien frontier: see the haunting, beautiful weirdness of Mars

Mounted to the Mars Reconnaissance Orbiter as it floats high above the red planet is the HiRISE telescope, an imaging device capable of taking incredibly high-resolution photos of the martian landscape. It’s sent back nearly 30,000 photos during its time above the planet, which have been used by NASA to find clear landing spots for rovers, and by researchers to learn more about the features of Mars’ surface.

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How Muppets Work

September 24th is Jim Henson's birthday, and he would be 77 years old today. If the name Jim Henson isn't familiar, you probably know one of his most popular creations: a small, bright-green frog with long limbs, round eyes and an endearing way of throwing his arms over his head and yelling “Yaaaay!” when he gets excited. He's been on television for more than 50 years and in movies for nearly 30. Kermit the Frog is one of Jim Henson’s puppets, better known as Muppets, and an international ambassador for puppets. Many people refer to Jim Henson as the most influential American puppeteer ever.

But what exactly is a Muppet? According to some sources, including Jim Henson’s wife, Jane, “Muppet” is a combination of the words “marionette" and "puppet.” (A marionette is a specific type of puppet with strings attached to a control bar or bars, operated by a puppeteer from overhead.) However, Henson himself always said that he came up with the word “Muppet” because he liked the sound of it.

Muppets come in all sizes, from just a few inches long to more than 8 feet tall. They can be hand puppets, rod puppets or a combination of the two. Some Muppets are even worn by their operators. Muppets are also just about every shape, color and style imaginable — they can look like an animal, a person or an imaginary creature. But all Muppets have a few things in common: They’re made from soft, flexible materials, they’re perfectly suited for TV and movies, and they have unique, dynamic personalities.

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