Of Molecules and Men
September 27, 2014
Atoms and molecules are tiny but can have a big influence on the habitability of planets and astrobiologists' theories about them.
Reality Check: Favored Planet Theory Dries Up
July 26, 2014
Three "hot Jupiters" sing "how dry I am," casting serious doubt on the leading theory of planet formation.
Beware of Misinterpreting Water Claims
June 16, 2014
A claim of vast reservoirs of water deep in the earth is based on indirect evidence, and likely has little or nothing to do with surface water or floods.
Lunar Tunes: Do Impacts Ring a Bell?
June 12, 2014
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?
Every Planet Surprises Secular Astronomers, I: Inner Planets
May 3, 2014
"Surprise" or "puzzling" are the most common words in news reports about bodies in the solar system. Here are recent examples that discuss the inner planets.
Enceladus Ocean Means Dating Trouble, Not Life
April 5, 2014
News media are jumping over an announcement that Saturn's moon Enceladus may have a large body of water under its icy crust, but what does it mean?
Water Theories Dry Up
April 2, 2014
Theories for how Earth got its water are parched for evidence, except for the tears of secular astronomers.
Imagining Worlds – No Evidence Required
January 11, 2014
Science fiction is fun, but science demands evidence, not imagination.
Europa Joins the Geyser Club
December 12, 2013
Hints of watery plumes have been detected on Europa – like Enceladus, at its south pole, too.
Mars May Have Been Wet, But Never Lively
September 27, 2013
Astrobiologists got excited with evidence for early water on Mars, but other discoveries are putting the quash on hopes it has or had life.
Astrobiology: The Science of Could
July 1, 2013
Anything "could" happen. Shouldn't science deal with what does happen and what did happen? The "could" word is rampant in astrobiology literature and origin-of-life studies.
Moon Water and Magnetism Mystifies Astronomers
May 12, 2013
Two mysteries from the moon are forcing revisions to textbooks. One concerns water in moon minerals. The other concerns the moon's magnetic field.
Trouble for Mars Lifers
May 8, 2013
Evidence disputes Mars water, let alone life. It's looking like a toxic place. Besides, where would the water come from?
Titan and Mercury: Challenges to Billions of Years
January 18, 2013
News from Titan and Mercury continue to challenge current theories that they formed billions of years ago.
Planets and Moons Beneath the Surface
September 29, 2012
Can science peel back the surfaces of objects to see what's underneath? Can they go under the observations to find the explanations?