Dynamical and Biological Panspermia Constraints Within Multi-planet Exosystems

By Keith Cowing
Press Release
February 13, 2018
Filed under
Dynamical and Biological Panspermia Constraints Within Multi-planet Exosystems
Extrasolar planets

As discoveries of multiple planets in the habitable zone of their parent star mount, developing analytical techniques to quantify extrasolar intra-system panspermia will become increasingly important.

Here, we provide user-friendly prescriptions that describe the asteroid impact characteristics which would be necessary to transport life both inwards and outwards within these systems within a single framework. Our focus is on projectile generation and delivery and our expressions are algebraic, eliminating the need for the solution of differential equations. We derive a probability distribution function for life-bearing debris to reach a planetary orbit, and describe the survival of micro-organisms during planetary ejection, their journey through interplanetary space, and atmospheric entry.

Dimitri Veras, David J. Armstrong, James A. Blake, Jose F. Gutierrez-Marcos, Alan P. Jackson, Hendrik Schaefer
(Submitted on 12 Feb 2018)

Comments: Accepted for publication in Astrobiology
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Solar and Stellar Astrophysics (astro-ph.SR)
Cite as: arXiv:1802.04279 [astro-ph.EP] (or arXiv:1802.04279v1 [astro-ph.EP] for this version)
Submission history
From: Dimitri Veras
[v1] Mon, 12 Feb 2018 19:00:03 GMT (1850kb)

Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻