NPR science producer Jason Orfanon has been guest blogging from Antarctica on The Picture Show. Here's a preview of some photos that he's been posting via Twitpic. Keep up with him on Twitter to see more, and check out the series page as he blogs from the bottom of the world.

Gentoo penguins hover on the land.
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Gentoo penguins hover on the land. (Jason Orfanon/NPR)

Gentoo penguins hover on the land.

Gentoo penguins hover on the land. (Jason Orfanon/NPR)

Adelie penguins.
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Some Adelie penguins swam past the boat, leaping out of the water like dolphins. (Jason Orfanon/NPR)

Adelie penguins.

Some Adelie penguins swam past the boat, leaping out of the water like dolphins. (Jason Orfanon/NPR)

An Antarctic sunset.
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A breathtaking Antarctic sunset. Even a pile of plowed snow on the side of Palmer Station's only road looked beautiful. (Jason Orfanon/NPR)

An Antarctic sunset.

A breathtaking Antarctic sunset. Even a pile of plowed snow on the side of Palmer Station's only road looked beautiful. (Jason Orfanon/NPR)

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