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...ucted research confirming that <math>k=2</math> for the delta effect for [[comets]]. He has written four books – two about [[Association football|football]] ...of different size orbiting the center of mass. The spectrum can be seen to split depending on the position and velocity of the stars. Using this same princi ...

...tion]] to analyze several earlier cometary sightings. He observed that the comets of 1531, 1607, and 1682 had very similar orbital elements, and he theorized ...ast1=Whipple |first1=F.L. |title=A Comet Model. II. Physical Relations for Comets and Meteors. |journal=Astrophysical Journal |date=May 1951 |volume=113 |pag ...

...n the number of comets reaching the inner Solar System. Impacts from these comets could trigger a mass extinction of life on Earth. These disruptive encounte ...completion of the current [[supercontinent cycle]], wherein the continents split apart and then rejoin each other about every 400–500&nbsp;million years.<re ...

...ged linea of Europa, though the ridges on Triton often suddenly terminate, split, or form up to five parallel segments. These differences from the features ...

...a an as-yet unknown mechanism, theorized to be the impacts of asteroids or comets carrying water from the outer Solar System, where bodies contain much more Water can be split into its constituent elements, hydrogen and oxygen, by passing an electric ...

...[X-ray]] radiation{{sfn|Bourrier|de Wit|Bolmont|Stamenković|2017|p=2}} can split water into its component parts of hydrogen and oxygen, and heat the upper a ...

...voir by a factor of ~3 due to their deuterium-rich icy cores. The DHRs for comets are much larger than the values for the planets in the Solar System with δD ...[[gas chromatography]] (GC) using helium as the carrier gas, followed by a split-flow interface, and finally detected by IRMS. TC/EA method can be problemat ...