Periodic astronomical phenomena

In summary, this paper discusses the history of the debate over whether or not there have been long term cycles in biodiversity and extinction. They connect the skein from Grabau up to 2008 and conclude that there is evidence for periodicity, though more work is needed. They also comment on possible causal mechanisms, focusing especially on the motion of our solar system in the Galaxy. Finally, the significance of this for our understanding of evolution and the history of life is discussed.
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wolram
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arXiv:0901.3173 [pdf]
Title: Whilst this Planet Has Gone Cycling On: What Role for Periodic Astronomical Phenomena in Large Scale Patterns in the History of Life?
Authors: B.S. Lieberman, A.L. Melott (University of Kansas)
Comments: 39 pages, 5 figures, to be published in the Biosphere volume of the International Year of Planet Earth Series, J. Talent, Ed
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Galaxy Astrophysics (astro-ph.GA); Biological Physics (physics.bio-ph); Geophysics (physics.geo-ph); Populations and Evolution (q-bio.PE)
One of the longstanding debates in the history of paleontology focuses on the issue of whether or not there have been long term cycles (operating over tens of millions of years) in biodiversity and extinction. Here we consider the history of this debate by connecting the skein from Grabau up to 2008. We focus on the evidence for periodicity that has emerged thus far, and conclude that there is indeed some evidence that periodicity may be real, though of course more work is needed. We also comment on possible causal mechanisms, focusing especially on the motion of our solar system in the Galaxy. Moreover, we consider the reasons why some scientists have opposed periodicity over the years. Finally, we consider the significance of this for our understanding of evolution and the history of life.
 
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wolram said:
arXiv:0901.3173 [pdf]
Title: Whilst this Planet Has Gone Cycling On: What Role for Periodic Astronomical Phenomena in Large Scale Patterns in the History of Life?
Authors: B.S. Lieberman, A.L. Melott (University of Kansas)
Comments: 39 pages, 5 figures, to be published in the Biosphere volume of the International Year of Planet Earth Series, J. Talent, Ed
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Galaxy Astrophysics (astro-ph.GA); Biological Physics (physics.bio-ph); Geophysics (physics.geo-ph); Populations and Evolution (q-bio.PE)
One of the longstanding debates in the history of paleontology focuses on the issue of whether or not there have been long term cycles (operating over tens of millions of years) in biodiversity and extinction. Here we consider the history of this debate by connecting the skein from Grabau up to 2008. We focus on the evidence for periodicity that has emerged thus far, and conclude that there is indeed some evidence that periodicity may be real, though of course more work is needed. We also comment on possible causal mechanisms, focusing especially on the motion of our solar system in the Galaxy. Moreover, we consider the reasons why some scientists have opposed periodicity over the years. Finally, we consider the significance of this for our understanding of evolution and the history of life.

Can you provide a link?
 

Related to Periodic astronomical phenomena

1. What are periodic astronomical phenomena?

Periodic astronomical phenomena are natural occurrences in the universe that happen at regular intervals. These can include events such as eclipses, planetary alignments, and meteor showers.

2. What causes periodic astronomical phenomena?

The cause of periodic astronomical phenomena varies depending on the specific event. Some are caused by the orbits and rotations of celestial bodies, while others are influenced by gravitational forces and other factors.

3. How often do periodic astronomical phenomena occur?

The frequency of these events varies greatly. Some occur every few weeks or months, while others may only happen every few years or even decades. Some may also have irregular patterns of occurrence.

4. Can we predict when periodic astronomical phenomena will occur?

Yes, scientists use mathematical models and astronomical data to predict when these events will occur. However, there may be some slight variations due to factors such as the changing speed of planetary orbits.

5. What is the significance of studying periodic astronomical phenomena?

Studying periodic astronomical phenomena allows us to better understand the universe and the laws that govern it. It also helps us track and predict future events, which can have practical applications such as in navigation and agriculture.

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