What to Look for at Pluto
June 3, 2015
As New Horizons closes in on Pluto for its July 14 encounter, what questions should be asked?
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Origin of Life Theories Lost in Space
June 2, 2015
Scenarios for life's origin contradict one another and compete for implausibility.
Moon Origin Models Require Cheating
June 1, 2015
You can't get Earth's moon from a planetary collision without quasi-miraculous tweaks to the models.
It's Curtains for Enceladus
May 11, 2015
The geysers of Saturn's little moon are like sheets instead of jets, spelling trouble for theories of its ancient age and possible life.
Moon, Mercury, and Magnetic Fields
May 8, 2015
After the crash of MESSENGER, magnetic fields in the solar system have become a key topic for planetary science.
Did Apostle Paul Just See a Meteor?
April 22, 2015
An astronomer explains away Paul's Damascus vision as a meteor that "changed the course of Christianity." But does this explain a miracle or insert several more?
100,000 Galaxies Without a Sign of Life
April 19, 2015
An orbiting infrared telescope found no clear signs of life in 100,000 galaxies.
What You're Not Being Told About Earth's Magnetic Field
April 17, 2015
The simple story for the public: a dynamo creates the earth's magnetic field. The real story: complex scenario needed to start it and keep it running.
Solving Moon Origin Unsolves the Last Solution
April 9, 2015
The moon's origin has been "demystified," scientists are claiming. That's what they said last time.
Messages from Mercury
April 6, 2015
With MESSENGER in its final days before impact, the innermost planet has become a familiar place.
Orbital Ice Age Theory Melts
March 23, 2015
Orbital cycles do not cause ice ages, a new study suggests. Instead, the whole world experienced an ice age at the same time.
Geology Upset: Wind Carves Canyons Fast
March 19, 2015
According to a new study, wind carves canyons ten times faster than water. This has implications for theories on Mars and Earth.
Water Worlds Tempt with Life, Not Youth
March 13, 2015
More and more planets and moons are suspected of having liquid water, but what should be the logical implications?
Physical and Geological Hurdles on the Darwinian Race
March 7, 2015
Can the smooth big-bang-to-brain story of evolution jump the physical and geological hurdles along the way?
Solar System Reversals
February 9, 2015
The planets keep going around, but theories about them often stop and go backward or sideways. When nothing else works, send in the impactors!