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Earth's Geodynamo: An Energy Crisis

A new theory to maintain Earth's magnetic field looks like a case of special pleading to rescue a dogma.

Updates from Outer Planets

Let's review some of the latest news from missions to the outer planets.
Earthrise 2015 LRO

New Earthrise Is a Stunner

Take a look at this image from a lunar orbiter on the 47th anniversary of the historic Apollo 8 "Earthrise" photo.

Stuff Geologists Think They Know Till Tomorrow

The science of geology is like quicksand, ever shifting and not rock solid.

Want Salt on Your Ceres?

Those mysterious white spots on asteroid Ceres could be outcrops of salt. How did vast amounts of salt get out there?

Tilted Planets Throw Theories Off Kilter

An example of how data can be framed as success or failure, depending on the reporter's spin.

There's No Place Like Earth

A survey of known exoplanets finds no real estate as valuable as Earth.

New Earth Ocean Theory Is All Wet

Time to rewrite the textbooks again. Earth started out wet, scientists now claim, overturning decades of dogma.

Pluto May Be Erupting

Two mountains that look like giant volcanoes hint at current activity on Pluto.

Inventing Stars, Solar Systems and Universes

Always look into the methods used when scientists speak confidently about models for making things appear out of nowhere.

Cassini Plunges Through Enceladus Geyser, and Other Saturn News

Yesterday's daring plunge through a plume of an Enceladus geyser is the highlight of recent Saturn news.

Entropy in Space Seen at All Scales

Entropy at all scales: clearly seen. Creation of order: not so much.

Origin-of-Life Speculation Goes Off the Rails

Astrobiologists and their accomplices in the media are finding life everywhere where it isn't or couldn't be. Time to call in the science rangers.

Pounding Headaches for Solar System Dates

It's hard to tell when things crashed into each other.

Pluto Shock Rebounds

The first research paper from the New Horizons team focuses and amplifies the shock waves coming from the first images in July.
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