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Submission + - The death of dark matter? (phys.org)

slew writes: A team led by Case Western Reserve University researchers has found a significant new relationship in spiral and irregular galaxies: the acceleration observed in rotation curves tightly correlates with the gravitational acceleration expected from the visible mass only.

This correlation appears to be true of galaxies that would be apparently dominated by "halos" of dark matter in the current standard models which include dark matter to explain the mass/rotational anomalies in such galaxies.

The observations that enabled this result are the infrared measurements by the Spitzer space telescope which are considered more accurate indicators of stellar mass.

Unfortunately this new result does nothing to explain the observation of galactic expansion or apparent dark energy. So it is probably premature to throw in the towel, but hey settled science is too boring ;^)

Science

Submission + - M-Carbon: 50yro mystery solved (yale.edu) 1

slew writes: Unlike its more famous carbon cousins: diamonds and fullerenes, you've probably never heard of M-Carbon, but this form of compressed graphite which is as hard as diamonds has baffled researcher for half a century. Over the past few years, many theoretical computations have suggested at least a dozen different crystal structures for this phase of carbon, but new experiments showed that only one crystal structure fits the data: M-carbon.

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