“We don’t know anything about king penguins at Martillo Island,” says Sami Dodino, a penguinologist at Argentinian scientific institute CADIC.Ushuaia, right at the southern tip of Argentina, is known fondly as “The End of the World.” Travel around 1,000 km south and the next place you reach is Antarctica (although not before passing through another settlement on the Chilean side of the Beagle Channel, Puerto Williams—“Beyond the End of the World”).

Gill/NASA/JPL-Caltech/SwRI/MSSSNASA’s Cassini spacecraft spent 13 years orbiting Saturn and studying the planet and its moons in depth.Photograph: NASA/JPL-Caltech/Space Science InstituteDo you see a penguin?Photograph:NASA/JPL-CaltechOnce you're done, head over here to look at more space photos.

Security News This Week: Apple Contractors Will Stop Listening to Your Siri Recordings—For Now. Justin Sullivan. After a report in The Guardian detailed Apple's use of contractors to "grade" the recordings of Siri users, the company has said it will suspend the program.

But some researchers have found a new way to use satellites to figure out what penguins eat by capturing images of the animal’s poop deposits across Antarctica.A group of scientists studying Adélie penguins and climate change have found that the color of penguin droppings indicates whether the animals ate shrimp-like krill (reddish orange) or silverfish (blue).