Monthly Archives: November 2014

The Selection Coefficient and Early Selection Models of J. B. S. Haldane (1924)

Posted on November 24, 2014 by johwq64851

In 1924, J. B. S. Haldane published the first of a series of 10 papers with the main title, “A Mathematical Theory of Artificial and Natural Selection”. He expressed his motivation in the very first sentence of the first paper: … Continue reading →

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ESA’s Philae lander completes primary mission

Posted on November 19, 2014 by johwq64851

The European Space Agency’s successful Rosetta mission has completed another mission objective. After a few hiccups, the Philae lander successfully came to rest on comet 67P/CG and has uploaded its primary mission data to the Rosetta mothership, which has relayed … Continue reading →

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European Space Agency lands probe on comet

Posted on November 14, 2014 by johwq64851

Congratulations are due to the European Space Agency (ESA). They pulled off a remarkable feat with outstanding scientific potential by landing a probe on comet 67P/Churyumov–Gerasimenko. The mission is so difficult and has been so successful that, like the U.S.’s … Continue reading →

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Orbital implicates AJ-26 turbopumps in Antares’ failed launch, October 2014

Posted on November 10, 2014 by johwq64851

In a recent press release, Orbital suggested that a failure related to a turbopump in one of the rocket’s two AJ-26 engines may have caused the October, 2014 Antares/Cygnus launch abort that destroyed both rocket and spacecraft. The turbopumps deliver fuel … Continue reading →

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Space news: Private space-faring’s two major setbacks last week

Posted on November 4, 2014 by johwq64851

Private space-faring has taken a huge hit the last two weeks. On Tuesday, October 28, Orbital Science Corp. lost an Antares/Cygnus stack on liftoff at Wallops launch facility in Virginia. Shortly after the rocket cleared the pad the main engines … Continue reading →

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What did G. H. Hardy, of Hardy-Weinberg fame, actually show?

Posted on November 2, 2014 by johwq64851

Introduction G. H. Hardy was a very successful mathematician of the early 20th century. Even today he is highly esteemed among professional mathematicians. He made seminal contributions to a variety of subdisciplines, including number theory and analysis, and he was … Continue reading →

Posted in BIO 181, BIO 298, Evolution, Population genetics | Comments Off on What did G. H. Hardy, of Hardy-Weinberg fame, actually show?