Meteor Impact
  Barringer Crater


Asteroid Impact Calculator
  The Extinction Cycle

    In 1984, the paleontologists Raup and Sepkoski argued that there is a cyclical pattern to the extinction events recorded in the fossil record.  The pattern implied a 26 million year cycle, itself indicative of an extra-terrestrial cause.  There are no known terrestrial causes for such massive and regular extinctions.  Could Planet X be to blame, perhaps through showering Earth with comets as it achieves perihelion?
     If the cycle of these extinction events is to be believed (and it remains controversial among scientists), then any direct extra-terrestrial cause must be coincident with that enormous time-scale.  So it would not be satisfactory, then, to associate a 26 million-year extinction cycle with a planet whose orbit is measured in thousands of years only.  Nibiru’s relatively short orbit (Zecharia Sitchin’s ‘Sar’ of 3600 years) could only produce a random pattern of extinction events on this time-scale.
    The 26 million-year cycle would have to be a coincidental pattern, which is an unsatisfactory explanation scientifically.
Conservation of
Mass Extinctions
Conservation of

A Blast from the Past
Tragedy in the Carribean
K-T Event
Sixty-five million years ago about 70% of all species then living on Earth disappeared within a very short period. The disappearances included the last of the great dinosaurs. Paleontologists speculated and theorized for many years about what could have caused this "mass extinction," known, as the K-T event (Cretaceous-Tertiary Mass Extinction event). Then in 1980 Alvarez, Alvarez, Asaro, and Michel reported their discovery that the peculiar sedimentary clay layer that was laid down at the time of the extinction showed an enormous amount of the rare element iridium. First seen in the layer near Gubbio, Italy, the same enhancement was soon discovered to be world wide in that one particular 1-cm (0.4-in.) layer, both on land and at sea. The Alvarez team suggested that the enhancement was the product of a huge asteroid impact.


It is fortunate that more Iridium is in Meteors than in the Earth. As the Meteor hits the Earth the irdium is spread out.

Bryson says that they used a method called Nuclear Activation. They aimed neutrons at the sample and caused the stable Iridium to become radioactive. The scientists counted the radiation emanating from the sample and by calculating backwards determined how much Iridium was in the sample!

Using basic Physical Principles, scientists could have also used Mass Spectrometry
By taking the sample and pulverizing it, heating it and sending the particles through a
Mass Spectrometer they could count each element in the sample.
Basic Physical Principles  
Modern-day Proof!

Comet Shoemaker-Levy
A truly large collision in the Solar System.
and another