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Another Expert Agrees With Dark Comet Theory

February 21, 2013 – 11:31 am | No Comment

Astronomer David Asher (from Armagh University) has agreed with Bill Napier and Janaki Wickramasinghe (Cardiff University) that “dark comets” are real and dangerous.
The following quotes are from a paper by Napier and Asher published in Astronomy & Geophysics.
http://star.arm.ac.uk/preprints/2009/539.pdf

We know that about one bright comet (of absolute magnitude as bright as 7, comparable to Halley’s Comet) arrives in the visibility zone (perihelion q<5AU, say) each year from the Oort cloud. It seems to be securely established that ~1–2% of these are captured into Halleytype (HT) orbits. The dynamical lifetime of a body in such an orbit can be estimated, from which the expected number of HT comets is perhaps ~3000. The actual number of active HT comets is ~25. This discrepancy of at least two powers of 10 in the expected impact rate from comets as deduced from this theoretical argument on the one hand, and observations on the other, is …

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Home » DNA, Evolution

Supporting Evolution Snippets from New Scientist

Submitted by on April 22, 2008 – 10:32 amNo Comment

Can mutation really lead to the evolution of new species?

Yes. Several species of abalone shellfish have evolved due to mutations in the protein “key” on the surface of sperm that binds to a “lock” on the surface of eggs. This might appear impossible, but it turns out that some eggs are prepared to be penetrated by deviant sperm. The same thing can happen in fruit flies, and likely in many other groups too. In yeasts, the mutations that led to some new species forming have not only been identified, they have even been reversed.

http://www.newscientist.com/channel/life/dn13673-evolution-myths-mutations-can-only-destroy-information.html

Organisms do not always hang about waiting for a helpful mutation to occur. For instance, the parasite that causes sleeping sickness has thousands of spare genes for its coat proteins, which it mixes and matches to generate new coats faster than its host’s immune system can keep up.

More controversially, a few biologists think some microbes may have evolved mechanisms for boosting the mutation rate in specific genes when they are struggling to cope with a changing environment, or for “storing up” variation for when it is needed

http://www.newscientist.com/channel/life/dn13698-evolution-myths-evolution-is-random.html

It won’t be long (hopefully pre-2012) before a prominent scientist dares to suggest that we evolve the the way our DNA chooses, into new species.

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