Planet formation and the evolution of the Solar System

Woolfson, M. M.

doi:10.1088/1402-4896/ab1ee1

Cited by 3 publications

(2 citation statements)

References 78 publications

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“…Interstellar matter is a combination of gas, dust, and radiation that occupies space between stars in a galaxy. If too much interstellar matter is compressed into a relatively small volume, its gravity will be strong enough to overcome the internal pressure and continue to contract, which will cause what is known as a gravitational collapse [3].…”

Section: The Onset Of Gravitational Collapsementioning

confidence: 99%

The life of the Sun

Mu,

2024

TNS

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Understanding the development and evolution of the Sun is critical for understanding the origins of our solar system and the circumstances for life on Earth. We can learn about our suns dynamics, energy output, and magnetic activity by analysing its evolution, and we can even forecast solar events that affect our world. Extensive study has indicated that the Sun is now in its main sequence stage, but research on its future development, such as becoming a red giant or crashing into a white dwarf, is still underway. Solar evolution research also sheds light on the inner workings of other stars and fundamental processes in the cosmos. The Hertzsprung-Russell diagram aids in the classification and understanding of stars by providing essential information about their life cycle and attributes. The pre-main sequence, main sequence, and post-main sequence stages of the Suns origin and development are discussed in this article. It examines the origin of the Sun from interstellar materials as well as the probable impact of core-collapse supernovae. It also delves into the main sequence period, where stars masses and ages play important roles in shaping their properties. The main sequences existence is linked to hydrostatic equilibrium and the balance of energy production and gas weight. The scattering of stars that depart from the main sequence, such as red giants and white dwarfs, is also discussed in the article. Finally, it dives into post-main sequence development, in which the Sun switches from hydrogen fusion to helium fusion, causing the star to expand and cool. Finally, the Suns ultimate phase of development involves the burning of hydrogen and helium, which results in the expulsion of outer layers and the creation of a planetary nebula. The remaining core cools and transforms into a black dwarf, bereft of nuclear and gravitational energy sources.

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Section: The Onset Of Gravitational Collapsementioning

confidence: 99%

The life of the Sun

Mu,

2024

TNS

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“…There is a range of histories and types of planetary systems under which such exchanges could occur. Histories of migrating planets and their roving excreta further tone the clarification of planetary surface properties to be included in the framework of exploration of extra-solar systems [106][107][108].…”

Section: Abiogenesismentioning

confidence: 99%

Astrovirology, Astrobiology, Artificial Intelligence: Extra-Solar System Investigations

Shapshak

2019

Global Virology III: Virology in the 21st Century

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This chapter attempts to encompass and tackle a large problem in Astrovirology and Astrobiology. There is a huge anthropomorphic prejudice that although life is unlikely, the just-right Goldilocks terrestrial conditions mean that the just-right balance of minerals and basic small molecules inevitably result in life as we know it throughout our solar system, galaxy, and the rest of the universe. Moreover, when such conditions on planets such as ours may not be quite right for the origin of life, it is popularly opined that asteroids and comets magically produce life or at the very least, the important, if not crucial components of terrestrial life so that life then blooms, when their fragments cruise the solar system, stars, and galaxies, and plummet onto appropriately bedecked planets and moons. It is no longer extraordinary to detect extraterrestrial solar systems. Moreover, since extra-solar system space exploration has commenced, this provides the problem of detecting life with enhanced achievability. Small organisms, which replicate outside of a living cell or host, would not be catalogued as viruses. How about viruses that cohabit with life? On the Earth, viruses are a major, if underestimated, condition of life-will that be the case elsewhere? Detection of extra-solar system viruses, if they exist, requires finding life, since viruses necessitate life to replicate. (It should be noted, though, that viruses could be detected through various types of portable ultra-microscopes, including Electron Microscopes (EM) (scanning and transmission) as well as Atomic Force Microscopes (AFM).) However, extra-solar system detection of life does not oblige that viruses exist ubiquitously. Viruses are important potential components of biospheres because of their multiple interactions and influence on evolution, although viruses are small and obligatory parasitic. In addition, nanotechnology-living or replicating nano-synthetic machine organisms might also be present out there, and require consideration as well. An imposing caveat is that, if found, could some extraterrestrial viruses and synthetic nanotechnological microorganisms infect humans? This chapter is dedicated to Ettore Majorana, who changed the view of the universe.

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Michael Mark Woolfson. 9 January 1927—23 December 2019

Wilson

Dodson

2021

Biogr. Mems Fell. R. Soc.

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Michael Woolfson contributed enormously to the theory and practice of X-ray crystallography for almost 60 years. He extended the theory of ‘direct methods’, which provided a general solution of the crystallographic phase problem from the measured diffraction data alone, and provided tools to exploit this theory. Software developed in his laboratory, such as the computer package MULTAN, was responsible for about half of the structures determined around the world in the 1970s and 1980s. His parallel work on the origin of the Solar System renewed interest in the Capture theory, and he contributed numerous stimulating ideas to the general study of the origin and dynamical evolution of the Solar System. Michael was a great educator and mentor for both undergraduates and young researchers, and many of these went on to make significant scientific contributions.

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Planet formation and the evolution of the Solar System

Cited by 3 publications

References 78 publications

The life of the Sun

The life of the Sun

Astrovirology, Astrobiology, Artificial Intelligence: Extra-Solar System Investigations

Michael Mark Woolfson. 9 January 1927—23 December 2019

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