| February 13 Magnetic Pole Reversal Ahead? | | | |
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| Magnetic pole reversal ahead? | | What's magnetic north would become magnetic south. Is Earth headed to a pole reversal? A look at the archaeological record in southern Africa provides clues. | | | Hints of a quiet, stray black hole | | Theoretical studies predict 100 million to 1 billion black holes in our Milky Way galaxy. So far, astronomers have found about 60. A serendipitous discovery could lead to finding more. | | | | Sky solution to help endangered species | | An astrophysicist and an ecologist are combining their expertise using drones, thermal cameras and the techniques used to analyse objects in space in order to help endangered species. | | | | | |
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| | | Track in Antarctic ice | Galen Halverson of McGill University captured this photo from the deck of the research ship Nathaniel B. Palmer, in Antarctica's Weddell Sea. | | | | |
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| | Zodiacal light is a glowing pyramid after dark | If you're driving on a highway in a dark location, it might look like the lights of a town just over the horizon. It's really sunlight reflecting off dust grains in the space of our solar system. Photo by Maureen Allen in Florida. | | | |
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