Venus Is Erupting

If new indirect observations are correct, Venus is an active planet today with huge volcanoes.

Space Aliens Still AWOL


Astrobiology Still Has No Biology


Our Solar System Appears Odd to Astronomers *


Planetary Youth Continues After Cassini

Triton from Voyager 2, 8/25/89

Planet Party Busted by Triton

Theories can be like parties with tantalizing speculations until big, whopping anomalies spoil the fun.

Activity on Planets Suggests Youth

Can these processes really have gone on for billions of years?

Hope, Not Evidence, Drives Astrobiology


Juno How Old the Solar System Is?


Only Earth Is a Life Haven

Here are more discoveries that make it reasonable to think complex life is rare in the universe, and might be unique to Earth.

Magnetic News


You Wouldn't Want to Live on "Earth's Cousin"

Despite the hype about another Earth-like exoplanet, Kepler 452b would not be as habitable as Venus.

Fire and Brimstone: Why Earth Isn't Like Venus

Both planets have abundant sulfur, but Earth life has a way of cycling it for good.

Moon, Mercury, and Magnetic Fields

After the crash of MESSENGER, magnetic fields in the solar system have become a key topic for planetary science.

Solar System Reversals

The planets keep going around, but theories about them often stop and go backward or sideways. When nothing else works, send in the impactors!
All Posts by Date