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Reality Check: Favored Planet Theory Dries Up

Three "hot Jupiters" sing "how dry I am," casting serious doubt on the leading theory of planet formation.

Keeping Titan Old

As the Cassini orbiter makes its 103rd close pass by Titan, have long-agers found ways to keep it billions of years old?

To Be Habitable, a Planet Needs Inhabitants

In a chicken-or-egg conundrum, astrobiologists are asking whether inhabitants are needed to make a planet habitable.

Carbon Cycle Keeps Earth from Fate of Venus, Mars

Another delicate balance making Earth habitable has been identified: the carbon cycle.

Changing Stories at Saturn and Titan

News from the ringed planet and its largest moon shows scientists can't keep their stories straight when trying to keep Saturn billions of years old.

Scientists Dodge Youthfulness of Saturn Moon Titan

Like Enceladus, Saturn's moon Titan shows multiple signs of being far less than 4.5 billion years old – yet the press releases are strangely silent about the implications.

Titan Is as Titan Does

Saturn's giant moon Titan keeps revealing mysterious dynamics in the here and now, leaving interpretation to fallible scientists who sometimes predicted otherwise.

Rubisco “Highly Tuned” for Fixing Atmospheric Carbon

Rubisco sounds like a brand of cracker or something, but it’s actually an air cleaner your life depends on.  It’s an enzyme that fixes atmospheric carbon for use by photosynthetic microbes and plants.  In doing so, it sweeps the planet of excess carbon dioxide – the greenhouse gas implicated in discussions of global warming – […]
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