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Why the North Pole Is Really a South Pole (and Vice Versa)

16 Aug , 2013 by Video

If you go out hiking this weekend and somehow find yourself hopelessly lost in the wilderness, but suddenly remember you have a compass with you, you can use it to find north because the needle always points towards the Earth’s geographic north pole, which never changes… right? Wrong, wrong, and wrong. And this video from […]

AR1654 is a Monster Sunspot. (And It’s Aiming Our Way.)

11 Jan , 2013 by

Active Region 1654 on the Sun’s western limb, seen by SDO on Jan. 11 (NASA/SDO/HMI team. Diagram by J. Major.) Like an enormous cannon that is slowly turning its barrel toward us, the latest giant sunspot region AR1654 is steadily moving into position to face Earth, loaded with plenty of magnetic energy to create M-class […]

Navy Scientists Spot New Solar Structures

9 Apr , 2012 by

[/caption] There’s something new under the Sun… well, just above the Sun, actually. Scientists at the Naval Research Laboratory have spotted structures in the Sun’s super-hot corona that may shed some light on the way its magnetic fields evolve — especially near the edges of vast, wind-spewing coronal holes. Coronal holes are regions where the […]

How the Moon Became Magnetized

10 Nov , 2011 by

[/caption] It’s been a mystery ever since the Apollo astronauts brought back samples of lunar rocks in the early 1970s. Some of the rocks had magnetic properties, especially one collected by geologist Harrison “Jack” Schmitt. But how could this happen? The Moon has no magnetosphere, and most previously accepted theories state that it never did. […]

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