Recently there is a suggestion about the star RXJ1856.5−3754, being a possible candidate for quark star. While from the estimates of the radiation radius, given by the authors, it does not seem to fit with any of the known models for such stars, the mass radius diagram admits the possibility of this being a quark star of mass M ⊙ < M < 1.4M ⊙ , provided the radius mentioned is the actual radius...

Slow-moving (v ∼ 15 km/s) ‘dark matter particles’ have allegedly been discovered in a recent experiment. We explore the possibility that these slow moving dark matter particles are small mirror matter dust particles originating from our solar system. Ways of further testing our hypothesis, including the possibility of observing these dust particles in cryogenic detectors such as NAUTILUS, are a...

Stephen Jay Gould, remarkable paleontologist and revered popularizer of science, died of cancer on May 20, 2002. With his death, he passed into the history that he loved; a history, as he well knew, whose mills grind exceedingly fine. Those mills have started work on his writings, just as he ruminated memorably over books by Lamarck, Cuvier, Goethe, Geoffrey St. Hilaire, Darwin, Weismann, de Vr...

Research on the relation between the structure of the self-concept and psychological well-being has yielded seemingly inconsistent and even conflicting results. This article presents studies that examined the validity of often-used measures of self-complexity and self-concept differentiation and tested their ability to predict personal identity and active cognitive processing. The findings reve...