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Cosmology

Searchers in the Dark Over Dark Matter
May 10, 2004
No sooner had Sean Carroll published his essay in Nature1 that dark matter proves how insignificant we are, that Geoff Brumfiel tells us in Nature Science Update that researchers can’t find the stuff.  The Cryogenic Dark Matter Search II is four times more sensitive than previous searches, but came up empty.  Carroll had just reiterated […]
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Astronomy

Hot Jupiter!  Exoplanets Found Very Close to Stars
May 7, 2004
Two examples of Jupiter-size planets have been found by the European Southern Observatory.  They are so close to their parent stars, they orbit in less than two earth-days each.  Mercury would be 17 times farther out than one of them.  They belong to a new class of exoplanets scientists are terming “hot Jupiters.” A few […]
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Solar System

Io, Io, It’s Off to Work We Go
May 4, 2004
The innermost large moon of Jupiter, Io is the most volcanically active body in the solar system. About the size of our moon but no more than a speck of light in small telescopes, Io caused a sensation when Galileo first glimpsed it and the other three major satellites of Jupiter in 1610. Back then, […]
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Astronomy

Lutherans Helped Copernicus
April 30, 2004
Every once in awhile, we are confronted to reconsider things we “know” are true, only to find out the truth is closer to the opposite. The usual spin on Nicolaus Copernicus is that he was a brave scientist who threatened the church with his discovery that the earth orbits the sun, not the sun the […]
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Intelligent Design

SETI Researcher Analyzes Language Mathematically
April 26, 2004
Space.com had a story April 22 about Dr. Laurance Doyle, who studies non-human communication with information theory.  The article is mostly about his study of whale and dolphin signaling, but mentions how information theory is related to the intelligence of the communicating entities: Doyle’s team uses statistical tools from a field known as “information theory” […]
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Solar System

The Spin on a New Planet
April 16, 2004
Planetary scientists are “completely baffled” by a new “mysterious” planetoid named Sedna, discovered March 15.  About 70% the diameter of Pluto, it has no moon like Pluto does, but rotates very slowly – somewhere between 20 and 50 days – which would normally imply the presence of a satellite.  Most small bodies rotate in a […]
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SETI

Arecibo SETI Project Draws a Blank
March 31, 2004
Project Phoenix, a 10-year project searching for evidence of extraterrestrial intelligence, found nothing, reports the BBC News.  The project used the world’s most powerful radio telescope at Arecibo, Puerto Rico, to scan 800 nearby stars for signals.  Project manager Peter Backus claims the team has learned a lot about searching for ETI, but concludes we […]
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Cosmology

Privileged Planet Website Opens
March 16, 2004
A website featuring a new book by Guillermo Gonzalez and Jay Richards, The Privileged Planet, has opened.  The subtitle of the book is How Our Place in the Cosmos Is Designed for Discovery.  The authors take issue with pessimistic views, such as those of Steven Weinberg and Carl Sagan, that our planet is “pointless” or […]
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Dumb Ideas

Much Ado About Nothing
March 12, 2004
How much can you say about nothing?  Some people can say quite a lot.  One astrobiologist just wrote a large book about it: Lonely Planets: The Natural Philosophy of Alien Life by David Grinspoon (Harper Collins, 2003).     Larry R. Nittler reviewed this new book in the March 12 issue of Science.1  Nittler describes […]
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Cosmology

The Evolution of Omnipotence
March 11, 2004
With a headline like “New Theory: Universe Created by Intelligent Being,” one might think that National Geographic News has gone creationist and rediscovered Genesis 1.  The opposite would be true.  The article by John Roach explores the radical thinking of a lawyer/scientist named James Gardner, who has just published a book, Biocosm: The New Scientific […]
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Astronomy

Hubble Deep Field Surpassed: Ultra Deep Field
March 9, 2004
If you remember the awe of seeing the first Hubble Deep Field image in 1995, check out the new HUDF: Hubble Ultra Deep Field (see also the New Scientist report).  The field of view, just one-tenth the size of the full moon, is a composite of 800 images taken for 11.3 days.  The 1995 image […]
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Astronomy

Superstar Challenges Theory
February 28, 2004
A new record holder has been found for biggest star: LBV 1806-20 in Sagittarius.  According to the NewsNotes entry on p. 20 of the April 2004 issue of Sky and Telescope, the star is up to 3 times hotter than the surface of our sun, and has a diameter 200 times as big.     […]
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Cosmology

Anthropic Principle Won’t Go Away
February 28, 2004
The so-called “Anthropic Principle” is the observation that the universe, whether by accident or design, appears to have been fine-tuned for our existence.  Dating back decades, if not centuries, the idea has been alternately criticized and seriously pondered by the world’s greatest cosmologists.  During the 1990s the idea was ridiculed to the point that, if […]
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Physical Science

Mercury’s Magnetic Field: Another Attempt to Save Theory from Data
February 13, 2004
Nature Feb. 121 restates a puzzle about Mercury known since the Mariner 10 encounters (1974-5): …why, against expectations, does Mercury have a global magnetic field? The planet’s diminutive size means that it should have cooled quickly after it formed.  Any molten core would have become solid, or almost completely so.  A magnetic-field-generating dynamo in an […]
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Cosmology

Are Dark Matter and Dark Energy the New Epicycles?
February 10, 2004
An article in The Economist suggests that dark matter and dark energy may not be necessary to understand the structure of the universe.  It refers to two recent papers that explain the cosmic background radiation and galaxy clusters with ordinary matter, without a need for either of the other two unknown quantities.  Are dark matter […]
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