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Solar System

Hope for Titan Ocean Evaporates into Ice Desert
May 4, 2006
Saturn’s moon Titan is a desert of sand made of ice grains mixed with hydrocarbons.  These grains form large fields of wind-driven dunes found over much of the planet-sized moon.  “Titan’s Seas Are Sand,” reported a press release from U of Arizona based on a paper in the May 5 issue of Science (see Perspective […]
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Astronomy

Astrobiology Ten Years Later: Can It Justify Its Funding?
April 17, 2006
Astrobiology just turned ten years old, but is experiencing growing pains, partly due to a starvation diet.  This “science without a subject” (as George Gaylord Simpson quipped about its predecessor, exobiology) is struggling to justify itself at the Congressional feeding trough.  Proponents tout it as the most important subject in the universe.  Why, then, is […]
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Origin of Life

“Fertile Imagination” Envisions Life on Titan
April 4, 2006
The dramatic landing of the Huygens Probe on Titan over a year ago (01/14/2005, 01/21/2005, 12/05/2005) is finally getting some overdue notice from the media.  The PBS science series NOVA just aired a new program on Cassini-Huygens, “Voyage to the Mystery Moon” (see your local PBS station for rebroadcast times), and Astronomy Magazine’s May 2006 […]
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Origin of Life

Dry-Marsers Score Points
March 23, 2006
Those looking for water on Mars in hopes that life would grow in it had some setbacks this week.  National Geographic and Mars Daily reported on work by Gwendolyn Bart (U of Arizona) who found gullies on the moon similar to those on Mars thought to be formed by water.  Since the moon never had […]
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Astronomy

Planet-Making a Lost Art
March 21, 2006
Exclusive  Solar system theorists are trying to reverse engineer the planets without the recipe.  Planets exist, but they can’t get from a rotating disk of dust and gas to a solar system from their models.  They are at a loss to explain Jupiter, Saturn, Uranus, Neptune and a host of Jupiter-class planets around other stars. […]
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Solar System

Stardust Finds Burnt Rock in Comet Dust
March 14, 2006
Major upset in solar system origin theories indicated by minerals that had to form hot.
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Physical Science

Keeping Icy Moons Warm for Billions of Years
March 1, 2006
Each spacecraft that has explored the outer solar system has yielded surprises.  It is common knowledge that Voyager scientists were blown away by the first views of active moons they expected to be cold and old.  Recent discoveries have only intensified the surprises.  Richard Kerr wrote recently in Science,1 Why is there geology on Saturn’s […]
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Biology

Alien Engineering: Is It Intelligent Design?
February 16, 2006
The SETI Institute finished airing a 2-part series on the History Channel called Alien Engineering (it will be rebroadcast on Feb. 18).  The series, featuring SETI Institute scientists Seth Shostak and Frank Drake, asks the following questions: Prepare for an exercise in imagination.  Suppose that an alien spacecraft crashed in the desert and we humans […]
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Origin of Life

SETI Tries to Stretch the Habitable Zone
February 9, 2006
Can life exist outside the circumstellar habitable zone, that ring of life around a star where the temperature is comfy?  “For more than 150 years,” Ker Than wrote for LiveScience, “…this zone has been defined as a narrow disk around a star where temperatures are moderate enough that water on the surface of a planet […]
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Physical Science

Keeping Saturn’s Moons Old
February 6, 2006
The Saturn system has a problem: young moons.  The current consensus on the age of the solar system (4.5 billion years) cannot handle such young objects.  Richard A. Kerr in Science last month described the vexing problem:1 Why is there geology on Saturn’s icy satellites?  Where did these smallish moons get the energy to refresh […]
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Human Body

Space Travel Too Hazardous for Humans
February 1, 2006
Astronomy magazine’s March 2006 issue contains a couple of sobering articles for those who like to dream of humans mastering the universe.  Asking “Will moon dust stop NASA?”, Trudy E. Bell described the dangers of space dust: “it sticks to spacesuits, wreaks havoc on equipment, and may be physically harmful,” she wrote, citing the experiences […]
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Cosmology

ID Film Takes Hollywood
January 15, 2006
Grauman’s Chinese Theater on Hollywood Boulevard is a top tourist attraction in Tinseltown.  It features dozens of handprints of famous movie and TV stars, from Lucille Ball and Bill Cosby to Mickey Mouse.  This venue of many a blockbuster and glitzy opening night seemed hardly a place for naturalistic cosmology to take a thrashing, but […]
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Solar System

Planet Out of Bounds
December 14, 2005
There’s a small planetary object where it shouldn’t be.  New Scientist reported the discovery of a Kuiper Belt object (KBO) with a high inclination of 47° and a nearly circular orbit.  Astronomers can’t figure out how it got there.  It’s too far out to have been flung by Neptune into such a strange orbit.  They […]
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Solar System

It Was the Year of Titan
December 5, 2005
Of the top 10 astronomy stories for 2005, Astronomy Magazine gave #6 to Cassini’s year at Saturn, and #1 to the Huygens landing on Titan last January 14 (01/14/2005, 01/21/2005).     The official science papers from that event are now in.  In a special online edition, Nature1 published 9 new papers and articles with […]
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Solar System

Enceladus Eruptions Caught on Camera
November 28, 2005
Enceladus, one of the small icy moons of Saturn, is undergoing eruptive activity right now.  Evidence from previous flybys has now been corroborated visually in stunning images that made the lead stories on NASA, JPL and Cassini.  Amateur enthusiasts were already expressing excitement at the images before the announcement (see Unmanned Spaceflight).  The complete set […]
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