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Asteroids: their physical properties and why they matter

Harris, Alan (2016) Asteroids: their physical properties and why they matter. Colloquium Kapteyn Astronomical Institute, Univ. Groningen, 21. Nov. 2016, Groningen, Niederlande.

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Official URL: https://www.astro.rug.nl/~kc/

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/108296/
Document Type:Conference or Workshop Item (Speech)
Title:Asteroids: their physical properties and why they matter
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Harris, AlanAlan.Harris (at) dlr.dehttps://orcid.org/0000-0001-8548-8268
Date:21 November 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Solar system, asteroids, near-Earth objects, impact hazard
Event Title:Colloquium Kapteyn Astronomical Institute, Univ. Groningen
Event Location:Groningen, Niederlande
Event Type:Other
Event Dates:21. Nov. 2016
Organizer:Kapteyn Astronomical Institute
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:24 Nov 2016 11:01
Last Modified:02 Mar 2018 12:22

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