231 citations · 2.1k across the 31 of their papers we have counts for
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astro-ph2008★ 74 cited
Natural Transfer of Viable Microbes in Space from Planets in the Extra-Solar Systems to a Planet in our Solar System and Vice-Versa
Mauri Valtonen, Pasi Nurmi, Jia-Qing Zheng +7
We investigate whether it is possible that viable microbes could have been transported to Earth from the planets in extra-solar systems by means of natural vehicles such as ejecta…
astro-ph2008★ 99 cited
Injection of Oort Cloud Comets: The Fundamental Role of Stellar Perturbations
H. Rickman, M. Fouchard, Ch. Froeschlé +1
We present Monte Carlo simulations of the dynamical evolution of the Oort cloud over the age of the Solar System, using an initial sample of one million test comets without any clo…