User:SufferingSappho41/Asteroid impact avoidance: Difference between revisions
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Research published in 2021 pointed out the fact that for an effective deflection mission, there would need to be a significant amount of warning time, with the ideal being several years or more. The more warning time provided, the less energy will be necessary to divert the asteroid just enough to adjust the trajectory to avoid Earth. The study also emphasized that deflection, as opposed to destruction, can be a safer option, as there is a smaller likelihood of asteroid debris falling to Earth's surface. The researchers proposed the best way to divert an asteroid through deflection is adjusting the output of neutron energy in the nuclear explosion. <ref>{{Cite journal |last=Horan |first=Lansing S. |last2=Holland |first2=Darren E. |last3=Bruck Syal |first3=Megan |last4=Bevins |first4=James E. |last5=Wasem |first5=Joseph V. |date=2021-06-01 |title=Impact of neutron energy on asteroid deflection performance |url=https://www.sciencedirect.com/science/article/pii/S0094576521001028 |journal=Acta Astronautica |language=en |volume=183 |pages=29–42 |doi=10.1016/j.actaastro.2021.02.028 |issn=0094-5765}}</ref> |
Research published in 2021 pointed out the fact that for an effective deflection mission, there would need to be a significant amount of warning time, with the ideal being several years or more. The more warning time provided, the less energy will be necessary to divert the asteroid just enough to adjust the trajectory to avoid Earth. The study also emphasized that deflection, as opposed to destruction, can be a safer option, as there is a smaller likelihood of asteroid debris falling to Earth's surface. The researchers proposed the best way to divert an asteroid through deflection is adjusting the output of neutron energy in the nuclear explosion. <ref>{{Cite journal |last=Horan |first=Lansing S. |last2=Holland |first2=Darren E. |last3=Bruck Syal |first3=Megan |last4=Bevins |first4=James E. |last5=Wasem |first5=Joseph V. |date=2021-06-01 |title=Impact of neutron energy on asteroid deflection performance |url=https://www.sciencedirect.com/science/article/pii/S0094576521001028 |journal=Acta Astronautica |language=en |volume=183 |pages=29–42 |doi=10.1016/j.actaastro.2021.02.028 |issn=0094-5765}}</ref> |
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A study published in 2020 pointed out that a non-nuclear kinetic impact becomes less effective the larger and closer the asteroid. However, researchers ran a model that suggested a nuclear detonation near the surface of an asteroid designed to cover one side of the asteroid with x-rays would be effective. When the x-rays cover one side of an asteroid in the program, they produced propulsion energy that would propel the asteroid in a preferred direction. <ref>{{Cite journal |last=Dearborn |first=David S. P. |last2=Bruck Syal |first2=Megan |last3=Barbee |first3=Brent W. |last4=Gisler |first4=Galen |last5=Greenaugh |first5=Kevin |last6=Howley |first6=Kirsten M. |last7=Leung |first7=Ronald |last8=Lyzhoft |first8=Joshua |last9=Miller |first9=Paul L. |last10=Nuth |first10=Joseph A. |last11=Plesko |first11=Catherine S. |last12=Seery |first12=Bernard D. |last13=Wasem |first13=Joseph V. |last14=Weaver |first14=Robert P. |last15=Zebenay |first15=Melak |date=2020-01-01 |title=Options and uncertainties in planetary defense: Impulse-dependent response and the physical properties of asteroids |url=https://www.sciencedirect.com/science/article/pii/S0094576519313323 |journal=Acta Astronautica |language=en |volume=166 |pages=290–305 |doi=10.1016/j.actaastro.2019.10.026 |issn=0094-5765}}</ref> The lead researcher with the study, Dave Dearborn, said a nuclear impact offered more flexibility than a non-nuclear approach, as the energy output can be adjusted specifically to the asteroid's size and location. <ref>{{Cite web |title=Nuclear impulse could deflect massive asteroid {{!}} Lawrence Livermore National Laboratory |url=https://www.llnl.gov/news/nuclear-impulse-could-deflect-massive-asteroid |access-date=2023-04-25 |website=www.llnl.gov |language=en}}</ref>{{Dashboard.wikiedu.org draft template/about this sandbox}} |
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== Article Draft == |
== Article Draft == |
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Revision as of 02:47, 25 April 2023
A Hypervelocity Asteroid Mitigation Mission for Emergency Response (HAMMER) has been proposed.
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While there have been no updates as of 2023 regarding the HAMMER, NASA has published it's regular Planetary Defense Strategy and Action Plan for 2023. In it, NASA acknowledges that it is crucial to continue studying the potential of nuclear energy in deflecting or destroying asteroids. This is because it is currently the only option for defense if scientists were not aware of the asteroid within a few months or years, depending on the asteroid's velocity. The report also notes there needs to be research done into the legal implications as well as policy implications on the topic. [1]
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Research published in 2021 pointed out the fact that for an effective deflection mission, there would need to be a significant amount of warning time, with the ideal being several years or more. The more warning time provided, the less energy will be necessary to divert the asteroid just enough to adjust the trajectory to avoid Earth. The study also emphasized that deflection, as opposed to destruction, can be a safer option, as there is a smaller likelihood of asteroid debris falling to Earth's surface. The researchers proposed the best way to divert an asteroid through deflection is adjusting the output of neutron energy in the nuclear explosion. [2]
ADD:
A study published in 2020 pointed out that a non-nuclear kinetic impact becomes less effective the larger and closer the asteroid. However, researchers ran a model that suggested a nuclear detonation near the surface of an asteroid designed to cover one side of the asteroid with x-rays would be effective. When the x-rays cover one side of an asteroid in the program, they produced propulsion energy that would propel the asteroid in a preferred direction. [3] The lead researcher with the study, Dave Dearborn, said a nuclear impact offered more flexibility than a non-nuclear approach, as the energy output can be adjusted specifically to the asteroid's size and location. [4]
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References
- ^ "NASA Planetary Defense Strategy and Action Plan" (PDF). April 2023.
- ^ Horan, Lansing S.; Holland, Darren E.; Bruck Syal, Megan; Bevins, James E.; Wasem, Joseph V. (2021-06-01). "Impact of neutron energy on asteroid deflection performance". Acta Astronautica. 183: 29–42. doi:10.1016/j.actaastro.2021.02.028. ISSN 0094-5765.
- ^ Dearborn, David S. P.; Bruck Syal, Megan; Barbee, Brent W.; Gisler, Galen; Greenaugh, Kevin; Howley, Kirsten M.; Leung, Ronald; Lyzhoft, Joshua; Miller, Paul L.; Nuth, Joseph A.; Plesko, Catherine S.; Seery, Bernard D.; Wasem, Joseph V.; Weaver, Robert P.; Zebenay, Melak (2020-01-01). "Options and uncertainties in planetary defense: Impulse-dependent response and the physical properties of asteroids". Acta Astronautica. 166: 290–305. doi:10.1016/j.actaastro.2019.10.026. ISSN 0094-5765.
- ^ "Nuclear impulse could deflect massive asteroid | Lawrence Livermore National Laboratory". www.llnl.gov. Retrieved 2023-04-25.