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Rosetta and the Stone

A historic comet rendezvous mission begins today after ten years in space.

Two Solar System Surprises

Sometimes we learn more from surprises than predictions.

ISON Died a Customary Comet Death

Comet ISON was not unusual for breaking up and sputtering to a fiery end. That's in comets' nature.

Turning Astrobiology Surprises Into Evolutionary Fiction

There's never been a surprise that a good astrobiologist hasn't been able to spin into an evolutionary tale.

Comety Show: Oceans from Space

Finally, a comet has been found with a deuterium-to-hydrogen ratio that is close to that found in Earth’s oceans. That had not been true of many other comets. Astrobiologists claim this ration in Comet Hartley 2 as “proof” that our water came special delivery from water-balloon comets. But why do they believe that, what constitutes proof, and what new problems does the “proof” lead to?

Planetary Eruptions

Eruptions can come in two types: literal and figurative. Some planetary bodies are literally erupting. Others are causing figurative eruptions in theories. Here are some recent news stories about planets, moons, comets and other objects circling our sun and other stars. There hasn’t been much news from Mercury or Venus this month, so we’ll start on the home planet and work outward.

Stardust Finds Burnt Rock in Comet Dust

Major upset in solar system origin theories indicated by minerals that had to form hot.
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