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The truth about asteroids and comets: There’s good news and bad

Harris, Alan (2017) The truth about asteroids and comets: There’s good news and bad. Kant Scientific Evening Seminar, 20. Juni 2017, Berlin, Deutschland.

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Abstract

Most asteroids and comets are thought to be remnant collisional fragments of the building blocks from which planets in our solar system formed around 4.5 billion years ago. Asteroids and comets from diverse regions of the solar system probably enriched the early Earth and other planets in minerals, water, and organic materials essential for the development of life. In later epochs, impacts of asteroids and comets on the Earth may have abruptly altered the course of evolution and paved the way for mankind. However, mankind should now be aware that this natural process has not ceased. In particular, the current population of so-called near-Earth asteroids contains many objects that are considered potentially hazardous. On the positive side, near-Earth asteroids may prove to be valuable sources of raw materials (metals, water, rocket propellant, etc.) for future generations. I will illustrate the significance of asteroids and comets for life on Earth and describe current research into the relevant characteristics of these bodies. This research is helping us to better understand the risk of a devastating asteroid impact on our planet: that such an impact will occur one day is beyond question, unless we develop techniques to modify the orbits of hazardous asteroids.

Item URL in elib:https://elib.dlr.de/112831/
Document Type:Conference or Workshop Item (Speech)
Title:The truth about asteroids and comets: There’s good news and bad
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Harris, AlanAlan.Harris (at) dlr.dehttps://orcid.org/0000-0001-8548-8268
Date:20 June 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:asteroid, comet, near-Earth asteroids, impact hazard
Event Title:Kant Scientific Evening Seminar
Event Location:Berlin, Deutschland
Event Type:Other
Event Dates:20. Juni 2017
Organizer:Kant Akademie
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Planetary Evolution and Life
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Harris, Prof. Alan
Deposited On:20 Jul 2017 14:38
Last Modified:31 Jul 2019 20:10

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