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The Pros and Cons of Asteroids: A Thermophysical View

Harris, Alan (2017) The Pros and Cons of Asteroids: A Thermophysical View. Invited Talk at Queens University, 22.03.2017, Belfast, UK.

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Abstract

Most asteroids and comets are thought to be remnant collisional fragments of planetesimals, 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 planetary disk probably enriched the early Earth and other planets in minerals, water, and organic materials. 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 for life on Earth and describe recent results of astronomical research into relevant physical properties of these bodies. This research may help us to better understand how harmless asteroids become hazardous and how we can prevent a catastrophic impact on our planet.

Item URL in elib:https://elib.dlr.de/118242/
Document Type:Conference or Workshop Item (Speech)
Title:The Pros and Cons of Asteroids: A Thermophysical View
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Harris, AlanAlan.Harris (at) dlr.dehttps://orcid.org/0000-0001-8548-8268
Date:2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Asteroid, comet, near-Earth object, impact hazard
Event Title:Invited Talk at Queens University
Event Location:Belfast, UK
Event Type:Other
Event Dates:22.03.2017
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: Weiland, Marianne
Deposited On:15 Jan 2018 13:39
Last Modified:15 Jan 2018 13:39

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