EAS Publications Series
Volume 67-68, 2014The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases
|Page(s)||195 - 198|
|Section||The Origin and History of the Milky Way|
|Published online||17 July 2015|
N.A. Walton, F. Figueras, L. Balaguer-Núñez and C. Soubiran (eds)
EAS Publications Series, 67–68 (2014) 195-198
Assessing the influence of astronomical phenomena on the Earth
Max-Planck-Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
The temporal evolution of the terrestrial impact cratering rate over the past 250 Myr is dominated by a trend increasing towards the present. We find that the Sun's motion through the Galaxy plays at best a minor role in modulating this cratering rate. Moreover, the solar apex motion can explain the non-uniform longitude distribution of the perihelia of long period comets without invoking a solar companion in the outer Oort cloud.
© EAS, EDP Sciences, 2015
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