Inside Mercury, Is It Snowing Iron?: Scientists have long wondered about how a planet as small as Mercury could have kept its iron core fluid enough to account for the planet’s magnetic field. Physics would seem to dictate that the core cooled and solidified long ago. Now researchers are chewing on another theory: It’s snowing iron flakes inside Mercury. [Discovery]
Earth-Sized Tornadoes Seen on the Sun: A fiery tornado towering more than 10,000 kilometers has been spotted twirling on the surface of the sun and firing white-hot charged particles into interplanetary space, say solar scientists. [Discovery]
Cosmos ‘much brighter than it looks’: Our view of the cosmos is veiled by dust and the universe actually shines twice as bright as astronomers had thought, a discovery that will lead to a massive reevaluation of space images. [Telegraph]
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