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Asteroids: Relics of Ancient Time
Michael K. Shepard
- 16 Apr 2015
11
TL;DR: A night at the zoo, a day at the museum, a trip to the museum and a night in outer space are some of the classic tourist activities as discussed by the authors. But none of these are suitable for children.
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Abstract: Preface Acknowledgments 1. It's a small world 2. A night at the zoo 3. It came from outer space 4. A day at the museum 5. The gambler's fallacy 6. Remembrance of things past 7. The ties that bind 8. Terra incognita 9. To your scattered bodies go 10. Scouts, sappers, and miners Glossary References Index.
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Citations
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The Value of Science in Space Exploration
James S. J. Schwartz
- 02 Mar 2020
TL;DR: The Value of Science in Space Exploration provides a rigorous assessment of the value of scientific knowledge and understanding in the context of contemporary space exploration, arguing that traditional spaceflight rationales are deficient, and that the strongest defense of spaceflight comes from its potential to produce intrinsically and instrumentally valuableknowledge and understanding.
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Radar Observations of Itokawa in 2004 and Improved Shape Estimation
S. J. Ostro,Lance A. M. Benner,Christopher Magri,J. D. Giorgini,Randy Rose,Raymond F. Jurgens,D. K. Yeomans,A. A. Hine,Michael C. Nolan,Daniel J. Scheeres,Stephen B. Broschart,M. Kaasalained,Jean-Luc Margot +12 more
- 01 Aug 2005
TL;DR: Ostro et al. as mentioned in this paper presented June 2004 radar images of asteroid 25143 Itokawa (1998 SF36) that improved upon the longitude-latitude coverage of images obtained in 2001 by Ostro et.
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•Book
Introduction to Planetary Photometry
Michael K. Shepard
- 01 Apr 2017
TL;DR: In this article, the authors introduce planetary photometry as a quantitative remote sensing tool and demonstrate how reflected light can be measured and used to investigate the physical properties of bodies in our Solar System.
30
Marking Policy for New Asteroid Activities: In Pursuit of Science, Settlement, Security, or Sales?
Alanna Krolikowski,Martin Elvis +1 more
TL;DR: In this paper, the authors argue that the 4 main categories of asteroid activities envisioned today, scientific research (science), human settlement of other parts of the solar system (settlement), planetary defense (security), and mining (sales), are best served by policy regimes with distinct features.
22
References
Radar observations of Itokawa in 2004 and improved shape estimation
Steven J. Ostro,Lance A. M. Benner,Christopher Magri,Jon D. Giorgini,Randy Rose,Raymond F. Jurgens,Donald K. Yeomans,A. A. Hine,Michael C. Nolan,Daniel J. Scheeres,Stephen B. Broschart,Mikko Kaasalainen,Jean-Luc Margot +12 more
TL;DR: Ostro et al. as discussed by the authors presented June 2004 radar images of asteroid 25143 Itokawa (1998 SF36) that improved upon the longitude-latitude coverage of images obtained in 2001 by Ostro et.
Spectral Properties of Near-Earth Asteroids: Evidence for Sources of Ordinary Chondrite Meteorites
TL;DR: Near-Earth asteroids were found to have spectral properties that span the range between the previously separated domains of OC meteorites and the most common (S class) asteroids, suggesting a link.
Quantifying the Risk Posed by Potential Earth Impacts
TL;DR: A new hazard scale that will describe the risk posed by a particular potential impact in both absolute and relative terms is proposed and described, which reflects the urgency of the situation in a natural way and thus can guide specialists in assessing the computational and observational effort appropriate for a given situation.
on meteor‐generated infrasound
TL;DR: An analysis of the generation and propagation characteristics of infrasonic pressure waves excited during meteor entry into the earth's atmosphere is presented andKinetic energy estimates range from 1017 to 1022 ergs, each with an uncertainty of about 2 orders of magnitude.
Spectral Characteristics of Hayabusa 2 Near-Earth Asteroid Targets 162173 1999 JU3 and 2001 QC34
TL;DR: In this article, reflectance spectra of C-type near-Earth asteroid 162173 1999 JU3 were acquired on UT 2007 July 11, September 10 and 11, and an absorption feature centered near 0.7 μm, and associated with the presence of iron-bearing phyllosilicates, was seen in the 2007July 11 spectrum.