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Cosmology

Cosmology Mavericks Turn On the Red Light
December 6, 2004
According to the majority of astronomers, redshifts are “cosmological”: that is, they represent the effect on spectral light of the expansion of the universe.  A minority group of astronomers, however, claims otherwise, that at least a component of redshift represents intrinsic motion effects of rapidly moving objects irrespective of cosmic expansion.  For evidence, they point […]
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Dumb Ideas

SETI Researcher Thinks Big: Send Internet Smut to the Aliens
December 5, 2004
Seth Shostak (SETI Institute), in an article on Space.Com, answers the question, “What do you say to an extraterrestrial?”  He said we no longer need to limit ourselves to short messages like “What hath God wrought?”,* the phrase Samuel F. B. Morse sent with the first telegraph.  The bandwidth we have available now is huge, […]
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Solar System

Mars Opportunity for Life Must Tolerate Salty Acid
December 3, 2004
The first slew of scientific papers from the Mars Exploration Rover mission appeared in Science Dec. 3,1 with the focus of interest on Opportunity’s evidence for past water at Meridiani, because Spirit found only “volcanic rock rubble and inorganic soils” in the presumed lakebed at Gusev Crater. Jeffrey Kargel (U.S. Geological Survey) sums up the […]
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Solar System

Planet-Building a Mess, or Theories a Mess?
October 18, 2004
A news release from the Spitzer Space Telescope operated by JPL says, “Astronomers Discover Planet Building is Big Mess.”  Data from the orbiting infrared observatory indicates that dust disks around stars appear to be dominated by collisions of large bodies.  Surprisingly, the dust disks do not correlate with the stars’ ages.  A study of 266 […]
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Astronomy

Great Telescopes Converge on Kepler’s Supernova
October 8, 2004
The last supernova in our galaxy seen from earth was described October 9, 1604, by Johannes Kepler, a few years before the invention of the telescope.  Now, on the 400th anniversary of that observation, three of NASA’s “Great Observatory” orbiting telescopes – the Chandra X-Ray Observatory, the infrared Spitzer Space Telescope and the Hubble Space […]
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Cosmology

Modern Cosmology Is Clueless, Astronomy Columnist Says
October 6, 2004
A letter to the editor in the latest (November) issue of Astronomy tipped us off to something we missed in the July issue.  The subscriber wrote, Kudos to Bob Berman for bringing up the slipperiness of modern cosmology in ‘Theory chaotic’ (July 2004).  He must be one of the first to do so.  As he […]
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Solar System

Dating of Crater Rays Needs Overhaul
October 4, 2004
A dating method relied on by planetary geologists needs drastic revision, according to Planetary Science Research Discoveries (PSRD) scientists at the University of Hawaii.  Crater rays are the streaks that extend radially from impact craters.  Previously, planetary scientists assumed they darken over time under bombardment from the solar wind and can be used as indicators […]
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Cosmology

Cosmologist Squirms at Thought of Fine-Tuning
September 30, 2004
Lawrence Krauss (Case Western Reserve U, Ohio) meant to talk about prospects for distinguishing between sources of so-called dark energy, the mysterious force that appears to be accelerating the expansion of the universe.  But in the process, he opened his soul and revealed feelings, dreams, and nightmares.  First, he states the problem: Dark energy is […]
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Cosmology

PBS Airs Another Evolution Series: Origins
September 29, 2004
PBS NOVA aired its latest installment on evolution, a 4-hour miniseries entitled Origins, on September 28 and 29.  The website hype describes it as follows: Has the universe always existed?  How did it become a place that could harbor life?  What was the birth of our planet like?  Are we alone, or are there alien […]
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Solar System

Solar Particles Survive Genesis Crash
September 10, 2004
Scientists are relieved that they have been able to recover enough pieces from the crashed Genesis spacecraft to pursue the science objectives.  JPL Director Charles Elachi said they have snatched victory from the jaws of defeat and are bouncing back from a hard landing.  The highest-priority science goals may still be attainable, at least partially, […]
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Intelligent Design

Are We Lost on a Speck of Cosmic Dust?
September 1, 2004
A new Copernican revolution seems to be in the works, not another “demotion” of man from the center of the universe, but a promotion back to the ancient idea of plan or purpose for our existence.  The demotions reached their nadir with Carl Sagan’s Cosmos and other books that declared we are nothing special, that […]
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Bible and Theology

SETI Needs to Read, Not Listen
September 1, 2004
What technology would an extra-terrestrial intelligence use to communicate with us?  For fifty years, the search has presumed that an ET would use radio waves to announce “we’re here.”  Not a good idea, says a professor of computer and electrical engineering at Rutgers.  He thinks investors on distant planets would put their money not on […]
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Astronomy

Multispectral Galaxy Studies Contradict Theories
August 27, 2004
The latest issue of Caltech’s magazine Engineering and Science1 has beautiful pictures of galaxies taken in ultraviolet by the Galaxy Evolution Explorer (GALEX), and in the infrared by Hubble’s sister, the Spitzer Space Telescope.  Combining images of the same galaxy in visible, ultraviolet and infrared is helping astronomers figure out their structure, and as D. […]
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Astronomy

Delicate Planet Dance Disturbs Theories
August 27, 2004
Theorists have been thrown a curve ball with the discovery of a planet orbiting a binary star.  It appears that the gravitational tug on a hypothetical dust disk would have prevented the possibility of a planet forming around one of its members, but Gamma-Cephei has one.  “The formation of a planet in a binary star […]
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Solar System

Earth’s Ugly Sister Can’t Get a Date
August 16, 2004
Venus is the subject of an interview with David Grinspoon of NASA’s Exobiology Research Program in Astrobiology Magazine, and admits that the entire surface of our hellishly hot sister planet looks young.  It appears the globe was resurfaced almost simultaneously in the relatively recent past. Grinspoon relives the surprises from the Magellan mission: We’ve begun to […]
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