Loving Dark Matter Rather Than Light
December 31, 2011
There are two ways to describe dark things in science. One is phenomena we know exist, even if invisible to us, because we can measure their effects with instruments (X-rays, infrared radiation). The other is darkness as a placeholder for something not yet explained. Cosmologists have been talking about “dark matter” for decades now, and “dark energy” since the 1990s. Which category of dark ideas are they? Whether scientifically valid phenomena or placeholders for ignorance, one thing is clear from recent articles: much more knowledge is needed.
Naturalizing Miracles, or Miracle-izing Nature?
December 24, 2011
Certain scientists feel a need to explain all phenomena by means of natural processes, including reports of miracles. The word “natural,” however, is slippery, taking on a variety of meanings. Is scientific reasoning, for instance, natural? If so, it is not composed of atoms and forces acting according to “natural law.” Is it possible that the tables can be turned on the naturalizers, to rescue Christmas from materialist re-interpretation?
Observations Upset Models of Stellar Evolution
December 22, 2011
Stellar evolution models go back decades. Ever since the Hertzsprung-Russell diagram came out in 1910 (graphing temperature against luminosity), showing most stars fell on a line called the “main sequence”, astrophysicists have sought to understand the life cycle of stars from birth to death. In general, the story goes, collapsing clouds of gas and dust produce main-sequence stars that burn nuclear fuel till they run out. Depending on their masses, they end up as supernovae, red giants or slowly-cooling cinders. While red dwarfs cool down slowly into the darkness, supernovae and red giants eject mass outward into space . Two new planets found close to a red giant are among new headaches for theorists.
Earth’s Twin: What Does “Potentially Habitable” Mean?
December 5, 2011
The Kepler spacecraft has found dozens of “potentially habitable” planets around other stars, but this week announced one that some news sources are calling “Earth’s twin.”
Curiosity About Mars Rising
November 22, 2011
If all goes well on November 26, the newest Mars rover, nicknamed Curiosity, will rise above Earth’s atmosphere on a rocket pushing it toward the red planet. The Mars Science Laboratory (MSL) is the largest and best-equipped rover ever built for the robotic exploration of another planetary surface.
Selling Confabulation as Science
November 11, 2011
Science is supposed to be all about demonstrable proof through experiment. Should some scientists get away with confabulation – mere storytelling? Look at these recent headlines published on science news sites and consider whether some serious housecleaning is in order.
Space Physics and Fables
November 9, 2011
Physics is supposed to be the king of “hard science” because of its precise mathematics, predictability and falsifiability. When transferred off our planet, however, it seems speculation is the order of the day.
October 28, 2011
Members of our solar system that were little more than points of light for decades or centuries have now become familiar family members, seen up close and personal by spacecraft. Here are introductions to three worlds that are no longer mere names in a catalog. Even the names of members in this trio may be unfamiliar to some. They’re worth getting to know.
Aliens Among Us
October 26, 2011
Some SETI researchers are looking for intelligent design on Earth – by aliens! Paul Davies has written seriously about the possibility of “alien bioengineering” that could be detected in DNA. NASA’s tax-supported Astrobiology Institute gave the idea good press, apparently unaware that most SETI researchers and astrobiologists vociferously reject the theory of intelligent design.
It’s Still a Rare Earth
September 25, 2011
Now that hundreds of extrasolar planets are known, how do they compare to ours? The Kepler spacecraft has found a varied assortment of all sizes and distances away from their parent stars. Only a few reside in their star’s habitable zones. But that’s only the first of many requirements for life. Two recent studies indicate that Earth remains a rare bird in the celestial aviary.
Trouble in Cosmologyland
September 18, 2011
Underneath the veneer of certainty portrayed by TV documentaries about the universe are deep questions and controversies. Some of these briefly appear on publicly-available news stories, only to be covered by new coats of certainty. Are the new veneers fixing the problems or, instead, whitewashing serious weaknesses in current cosmological understanding? Here are some quick looks under the veneer.
Science Without an Object: Astrobiology, Alien Science
September 6, 2011
Can science exist without an observable object? In recent years we have seen serious scientists ponder alternate universes and parallel universes, dark matter, dark energy and other imponderable entities. String theory has yet to rest on observable data, and physicists at CERN are getting worried about not finding the hypothetical Higgs boson. Sooner or later, these theories need to detect their subjects or lose credibility in the science club. Perhaps nowhere else has the disconnect between hype and observation reached the absurd limits of astrobiology and alien science.
Freakish Star Stuns Astronomers
September 1, 2011
Astronomers have detected a star that should not exist. Current theory cannot explain the composition of a star in the constellation Leo. This “freakish star,” moreover, is probably not unique. What is it, exactly, that modern star formation theory does explain?
Lucky in the Sky with Diamonds
August 25, 2011
There are treasures all around us we do not perceive. Sometimes we speak figuratively about sparkling gems that are, if we realized it, literally real, right there under our noses. Children sing, “Twinkle, twinkle little star, how I wonder what you are, up above the world so high, like a diamond in the sky” without knowing that there really are diamond stars up there, with diamond planets, so magnificent and huge they are unfathomable in value. These are actual discoveries that have been announced by scientists this week.
8.7 Million Species Is Not a Scientific Fact
August 24, 2011
Human beings love to classify things. We pigeonhole items into bins of our own making, for whatever the reason, to give us a feeling of having things organized and understood. Do our pigeonholes reflect categories that are “out there” in nature, or are they constructs of our own minds? Science reporters are announcing in bold print that there are “8.7 million species on Earth,” but a look at the fine print shows the error bars to be so enormous, there is more error than data. What does this imply about the scientific validity of human classification schemes?