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Planet Rotation Limits Habitability

Life can't exist on a planet that rotates too fast or slow. This is another Goldilocks problem for astrobiologists to consider.

New Ways to Find E.T.

SETI researchers may not have to wait by the stellar radio dial for their imaginary friends to call in. They might eavesdrop on their pollution.

Rosetta and the Stone

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

Saturn's F-Ring Has Quieted Down

Comparing measurements over 25 years, planetary scientists have noted a drop in bright clumps in Saturn's tenuous F-ring.

Enceladus Geysers Still Unexplained

The number of geysers has topped a hundred on Saturn's overactive moon. How could they be sustained for billions of years?

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.

Start Over: The Evolution of Planets Is All Wrong

Ideas about planetary evolution are so far off base with observations of exoplanets, it's time to wipe the slate clean.

Inflation Concocted to Avoid a Young, Perfect Universe

Alan Guth concocted inflation theory in 1980 to avoid evidence for a 10,000-year-old universe. For his wild, evidence-free speculation, he may win a Nobel Prize.

Archive Classic: State of the Cosmos 2005: Alan Guth Explains Inflation

As Alan Guth rises to prominence this year for his inflation proposal, it might be useful for readers to see what he said about it in 2005.

Existence of Universe Is Highly Improbable

Theologians might rightly celebrate a recognition by cosmologists that the universe is so finely-tuned, it shouldn't exist.

Light Speed Implications Are Staggering

A new paper revises the speed of light. This could change everything in the universe.

Cosmic Inflation Proof Is on the Ropes

The highly-acclaimed evidence of inflation theory announced in March may only be a signal from local dust.

Galaxy Evolution Problem: A Case Study in Criticizing Paradigms

"When you have a clear contradiction like this, you ought to focus on it," say scientists who found problems with the leading theory of galaxy evolution.

Lunar Tunes: Do Impacts Ring a Bell?

By looking at current dust and craters, cosmologists think they can hear the echoes of an impact that created the moon. Is that lunar, or looney?

Anti-Creation Rhetoric Lacks Creativity

One would think, after so many decades, the secular scientists would come up with some original arguments for combating their favorite nemesis, the creationists.
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