VIEW HEADLINES ONLY

Cosmologists in Search of Dark Ghosts

Dark matter and dark energy: do they exist?  Cosmologists and physicists are spending large amounts of money building huge and expensive detectors to find them, but so far have found nothing.  This raises profound questions about the limits of science, the interaction of observation with theory, the presuppositions behind scientific models, and the sociology of […]

Nature Celebrates Bizarre “Many-Worlds” Cosmology

The cover of Nature this week (July 7) looks like a comic book.  And well it might: it celebrates the 50th anniversary of one of the weirdest beliefs ever submitted by a physicist: Hugh Everett’s “many-worlds” interpretation of quantum mechanics.  The bottom line is that every time you observe a coin toss or any other […]

Cosmic Star Formation: When Elegant Theories Are Wrong

An astronomer wrote about “cosmic train wrecks” in Science recently.1  Paolo Coppi (Yale) was speaking about galactic mergers, but he could have just as well been talking about current cosmological models.  Things once thought to be understood are coming in for new scrutiny, now that more powerful telescopes can peer deeper into the veiled hearts […]

Think Fast: News Briefs

Of the many news items that cross the CEH desk, many are noteworthy but go unreported due to lack of time.  Here are a few that deserve honorable mention lest they pass into oblivion. Cosmology: Dark future – Several sources like Science Now and Space.com commented on the dark future of the universe if cosmic acceleration […]

Hubble Explodes Star-Formation Assumption in Globular Clusters

The Hubble Telescope found three episodes of star formation in a globular cluster.  While this announcement might make a layman yawn, what’s interesting are the expressions of grief and anguish coming from astronomers about what this does to their theories.  For many years, astronomers had prided themselves on their understanding of globular clusters.  These massive, […]

Cosmology: Crisis or Confidence?

What is it with cosmology these days?  On the one hand, astronomers seem more confident than ever.  They speak of this as the era of “precision cosmology,” when the only task remaining seems to be refining the decimal points; e.g., the first refinements of the cosmic microwave background (CMB) won John Mather and George Smoot […]

Deconstructing Darwinese:  Delighting in Ignorance

When is ignorance a good thing?  When is confidence in one’s answers a bad thing?  One science writer expressed his desire for mystery over explanation – as long as the mysterious allowed room for lucky breaks without design.     Science writer Ben Shaberman got to share his views on the last page of the […]

Tangled String: Cosmology on the Brink

The February cover of Astronomy Magazine poses an intriguing question: “What if string theory is wrong?”  Maybe you are unfamiliar with string theory.  Writer Sten Odenwald is not talking about violins or balls of string, but about the current leading theory of fundamental physics.  “Superstring theory,” Odenwald explains, “is based on three ideas that remain […]

No Evolutionary Tree for Galaxies

Edwin Hubble was famous for many important discoveries, including the confirmation of external galaxies and the expansion of the universe (no, he did not build the Hubble Space Telescope; he died in 1953).  One of his theories, though, a kind of evolutionary story of galaxies, has not fared so well.  Sidney van den Bergh discussed […]

Why Are We Here? Because We’’re Not All There

The anthropic principle survived another criticism.  Charles Q. Choi on Space.com reported on a critique by two physicists who think the cosmological constant is not so finely tuned.  In the end, the argument was shot down.  The story, asking “Why Are We Here?” was picked up by Fox News. Watch the new film The Case […]

ID Support from Unlikely Quarters

While Nature 11/24 described intelligent design (ID) as a threat to science, support for it came from two new scientific books reviewed in the same issue.  Both of them, while not using the phrase intelligent design, deal with concepts that imply science must reach beyond material causes. Just right universal soup:  Jim Al-Khalili (U of […]

Strange Exploding Star Continues to Puzzle Astronomers

The Hubble took another image of the expanding shell of star V838 Monocerotis (see ESA and Hubblesite).  Four years after the first dramatic sequence (see 05/29/2003), astronomers are still puzzled by this star, with the most dramatic light echo ever photographed.  Leading hypothesis now is that two stars collided before the outburst.  The image made […]

Will Cosmology Emerge from the Dark Ages?

To cosmologists, the “dark ages” were not after the fall of Rome, but the time between the release of the microwave background radiation, and the light from the first stars.  In a feature article for the November Scientific American, Abraham Loeb discussed how astronomers hope to shed light on this epoch with new telescopes measuring […]

Deep Field Survey Shows Oldest Galaxies Yet

Astronomers continue to find mature galaxies at higher and higher redshifts.  The latest record, reported in Nature,1 is z=6.96, interpreted to mean the galaxy was present 700 million years after the big bang (usually dated at 13.7 billion years ago).  A survey of distant galaxies from the Hubble Ultra Deep Field (HUDF), also reported in […]

Whistling in the Dark Matter Debate

Who’s right?  Douglas Clowe’s team at U of Arizona claimed two weeks ago that they found dark matter in the Bullet Cluster – they even had a picture of it.  The Chandra X-Ray Center called it “direct proof” of dark matter.  Two days later, EurekAlert posted a story about a new proposal to bring back […]
All Posts by Date