New Pluto Images Even More Perplexing
September 25, 2015
Pluto has terrain like no other world, leaving scientists perplexed; Enceladus' activity is also inexplicable for "geologic time".
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Pluto Is Young
July 15, 2015
The New Horizons science team is stunned by surface features on Pluto and its large moon Charon that cannot be billions of years old.
Active Moon Triton Revisited
August 25, 2014
25 years ago today, Voyager 2 flew by Triton, a moon of Neptune, astonishing scientists with its active geology.
Io Volcanoes Go Hyperactive
August 7, 2014
The volcanoes on Jupiter's moon are bursting out at record rates, and nobody knows why. Is it the new normal?
Another Geyser World Erupts: Asteroid Ceres
January 23, 2014
The asteroid Ceres is popping off with water vapor on two sides. What's that world coming to? One thing is sure: DAWN is coming to it.
Was Earth Like Io?
October 11, 2013
It apparently solves an old problem to propose that the early Earth was busting out all over with volcanoes, like Jupiter's moon Io.
Scientists Dodge Youthfulness of Saturn Moon Enceladus
August 7, 2013
Planetary scientists have figured out that the geysers of Enceladus vary during its orbit, but seem oddly silent about the question of how long the little moon could remain so active.
Bimbo Eruptions in the Solar System
April 6, 2013
Planetary origin theories come across as popular and charismatic, till some little moon pops off and says, "Yoo-hoo! Remember me?"
Rare Moments of Glory: Planetary Scientists Admit Seeing "Lucky" Circumstances
February 2, 2013
Why are we seeing young phenomena in the planets if they are billions of years old? Some scientists are abandoning uniformitarian assumptions and admitting we are lucky to be witnessing them in "rare moments of glory."
Astronomy Grab Bag
December 29, 2012
For year's end, here's a clean-out of astronomy articles—from planetary science to cosmology—to motivate further inquiry.
Too Hot to Handle: Io and Enceladus
June 12, 2012
Two moons in the solar system are turning up the heat on beliefs that they could be billions of years old.
Planetary Eruptions
July 29, 2011
Eruptions can come in two types: literal and figurative. Some planetary bodies are literally erupting. Others are causing figurative eruptions in theories. Here are some recent news stories about planets, moons, comets and other objects circling our sun and other stars. There hasn’t been much news from Mercury or Venus this month, so we’ll start on the home planet and work outward.
Swinging at Saturn’s Moons: Keep Your Eye on the Ball
March 1, 2010
To avoid being misled by planetary scientists, keep your attention focused on the age issue.
New Horizons at Jupiter
October 15, 2007
New Horizons, a spaceship bound for Pluto, took a good look at the Jupiter system on Feb 28, 2007.