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Reviews

Expert reviews and annotations of scientific papers.

Machine Learning for Small Bodies in the Solar System

Valerio Carruba & Evgeny Smirnov and Dagmara Oszkiewicz (editors) (2025). Elsevier

Machine Learning for Small Bodies in the Solar System is the first book devoted entirely to the application of artificial intelligence and machine learning to the study of asteroids, comets, and trans-Neptunian objects. Covering topics from celestial mechanics and asteroid family identification to object detection, spectroscopy, and autonomous data analysis, it combines methodological foundations with practical implementations, including code examples and publicly available repositories. The volume is intended both as an introduction for researchers entering the field and as a reference for experienced planetary scientists seeking to incorporate modern AI techniques into their research. As the era of data-intensive surveys led by facilities such as the Vera C. Rubin Observatory begins, the methods presented in this book provide an essential foundation for the next generation of solar system science.

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This paper demonstrates the transformative potential of the Vera C. Rubin Observatory for the discovery of long-period and hyperbolic comets, showing that next-generation surveys could dramatically increase detection rates. Beyond its scientific results, it provides valuable insight into how modern survey capabilities and data-driven methods will reshape studies of the distant Solar System. An important reference for researchers interested in the future of small-body discovery and survey science.

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Remote Agent: to boldly go where no AI system has gone before

Muscettola, Nicola et al. (1998). Artificial Intelligence

A landmark paper in autonomous spacecraft operations, this work demonstrated that AI planning and execution systems could reliably control a spacecraft in a real mission environment. By validating the Remote Agent architecture beyond laboratory experiments, it established a foundation for autonomous space exploration and remains an essential reference for researchers interested in AI-driven mission planning, spacecraft autonomy, and intelligent control.

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Machine learning-assisted dynamical classification of trans-Neptunian objects

Volk, Kathryn & Malhotra, Renu (2025). Machine Learning for Small Bodies in the Solar System

One of the early applications of machine learning to the dynamical classification of trans-Neptunian objects, this work illustrates how AI can streamline the analysis of complex orbital behavior. Its methodology remains relevant as modern surveys continue to expand the known population of distant Solar System bodies, making automated classification increasingly important.

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An innovative application of AI to spacecraft guidance and control, this work introduces an adaptive control strategy for stable hovering around asteroids with uncertain gravity. It highlights the growing role of intelligent algorithms in enabling autonomous proximity operations, inspection, and future sampling and landing missions.

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This work establishes the first comprehensive benchmark for evaluating multimodal large language models on resonance classification in celestial mechanics. Its standardized datasets, evaluation methodology, and comparison of commercial and open-source models provide a foundation for future research on generative AI in dynamical astronomy. Essential reading for anyone interested in the intersection of large language models and Solar System dynamics.

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A pioneering application of DeepONets to asteroid thermophysical modeling, this work shows how neural operator architectures can dramatically accelerate surface temperature calculations while preserving high accuracy. Its methodology paves the way for efficient coupling of AI-based thermal models with orbital dynamics, making it an important contribution to the growing use of scientific machine learning in planetary science.

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A landmark paper that introduced Physics-Informed Neural Networks (PINNs), establishing one of the most influential frameworks for integrating physical laws with deep learning. By embedding differential equation constraints directly into neural network training, this work opened new avenues for data-driven scientific computing and inverse modeling. Essential reading for researchers interested in applying machine learning to physics, engineering, and celestial mechanics.

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This chapter provides an in-depth review of machine-learning methods for identifying cometary activity in wide-field astronomical surveys. By reviewing both classical approaches and modern AI techniques, it offers an accessible introduction to the challenges of detecting active solar system objects and discusses future applications to next-generation surveys such as the Vera C. Rubin Observatory. A valuable starting point for researchers entering this rapidly developing field.

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An important methodological contribution, this paper was among the first to apply vision transformers to the identification of secular resonances in asteroid dynamics. It illustrates the potential of modern deep-learning architectures to complement traditional dynamical analyses and represents a significant step toward AI-driven classification of resonant populations.

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This paper applies optimized artificial neural networks to the identification of asteroid resonances, demonstrating how machine-learning models can automate a challenging classification task in celestial mechanics. Beyond its technical contribution, it introduced an innovative methodology for resonance identification and was awarded the CELMEC Prize for innovative methods in dynamical astronomy. It remains a useful reference for researchers interested in applying neural networks to dynamical astronomy problems.

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Artificial neural network classification of asteroids in the M1:2 mean-motion resonance with Mars

Carruba, V. et al. (2021). Monthly Notices of the Royal Astronomical Society

Machine-learning identification of asteroid groups

Carruba, V. et al. (2019). Monthly Notices of the Royal Astronomical Society

A pioneering application of machine learning to asteroid family identification, this work showed that supervised clustering algorithms can efficiently recover known families and identify new candidate groups. The paper remains a valuable reference for understanding how machine-learning methods can complement traditional HCM approaches, particularly as the size of asteroid catalogs continues to increase.

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Machine learning classification of Kuiper belt populations

Smullen, Rachel A. & Volk, Kathryn (2020). Monthly Notices of the Royal Astronomical Society

One of the first studies to apply machine learning to the dynamical classification of Kuiper Belt Objects, this work showed that gradient-boosting methods can provide fast and accurate classifications with minimal loss of reliability. It remains an important reference for researchers interested in scalable approaches to the analysis of the rapidly growing KBO population.

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Machine learning classification of new asteroid families members

Carruba, V. et al. (2020). Monthly Notices of the Royal Astronomical Society

By comparing several supervised machine-learning classifiers for asteroid family identification, this study showed that data-driven methods can effectively complement traditional clustering approaches. The techniques remain relevant today, as they readily scale to the rapidly expanding asteroid databases produced by modern surveys.

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Identification of asteroids trapped inside three-body mean motion resonances: a machine-learning approach

Smirnov, Evgeny A. & Markov, Alexey B. (2017). Monthly Notices of the Royal Astronomical Society

A pioneering application of machine learning to asteroid dynamics, this work showed that scikit-learn classifiers could successfully identify three-body mean motion resonances. While the field has since advanced considerably, the paper remains a useful reference for researchers interested in applying classical machine-learning techniques to problems in celestial mechanics.

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I-Sharing, not exactly existential isolation

ES

At last, something really close to the concept of existential isolation

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Samples are students and Amazon Turk...

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The Yarkovsky Effect on the Long-term Evolution of Binary Asteroids

周, Wen-Han 文翰 Zhou et al. (2024). The Astrophysical Journal Letters

By developing and numerically verifying an analytical model that includes Yarkovsky–Schach and planetary thermal effects, the researchers demonstrated that the Yarkovsky force significantly impacts mutual binary orbits. This orbital evolution occurs specifically in non-synchronous systems, where the spin and orbital periods differ, opening up new possibilities for understanding how binary systems migrate over time.

Doing Interviews

Kvale, Steinar (2007). SAGE Publications, Ltd

One of the best books for beginners on qualitative methods. Chapter 9 has an excellent guide on how to apply content analysis.

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Qualitative Content Analysis: A Guide to Paths not Taken

Morgan, David L. (1993). Qualitative Health Research

When to choose content analysis, and when — thematic analysis.

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The qualitative content analysis process

Elo, Satu & Kyngäs, Helvi (2008). Journal of Advanced Nursing

Content Analysis: An Introduction to Its Methodology

Krippendorff, Klaus (2019). SAGE Publications, Inc.

Qualitative Content Analysis in Practice

Schreier, Margrit (2012). SAGE Publications Ltd

Qualitative Content Analysis

Mayring, Philipp (2008). Forum: Qualitative Social Research (Freie Universität Berlin)

Theme development in qualitative content analysis and thematic analysis

Vaismoradi, Mojtaba et al. (2016). Journal of Nursing Education and Practice

A hands-on guide to doing content analysis

Erlingsson, Christen & Brysiewicz, Petra (2017). African Journal of Emergency Medicine

How to plan and perform a qualitative study using content analysis

Bengtsson, Mariette (2016). NursingPlus Open

Key work on conducting a qualitative study using content analysis

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One of the best guide articles on practical content analysis

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Three Approaches to Qualitative Content Analysis

Hsieh, Hsiu-Fang & Shannon, Sarah E. (2005). Qualitative Health Research

A key work for understanding different types of content analysis.

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This study provides comprehensive data on Yarkovsky-driven changes in eccentricity and longitude of periapse. By exploring a broad range of physical and orbital parameters, the results complement the drift rates in semi-major axis previously established by Spitale and Greenberg (2001).

It is shown that the average thermal inertia of a sample of NEAs in the km-size range is 200 ± 40 J m^−2 s^−0.5 K^−1 and it is identified a trend of increasing thermal inertia with decreasing asteroid diameter.

Arecibo radar ranging of NEA 6489 Golevka (diameter ~ 0.5 km) confirms the presence of Yarkovsky-driven orbital drift. This non-gravitational perturbation was isolated by comparing the asteroid's observed trajectory against purely Newtonian dynamical models.

The Yarkovsky Effect on the Long-term Evolution of Binary Asteroids

周, Wen-Han 文翰 Zhou et al. (2024). The Astrophysical Journal Letters

By developing and numerically verifying an analytical model that includes Yarkovsky–Schach and planetary thermal effects, the researchers demonstrated that the Yarkovsky force significantly impacts mutual binary orbits. This orbital evolution occurs specifically in non-synchronous systems, where the spin and orbital periods differ, opening up new possibilities for understanding how binary systems migrate over time.

Near Earth Asteroids with measurable Yarkovsky effect

Farnocchia, D. et al. (2013). Icarus

By measuring non-gravitational orbital drift, this study identifies the Yarkovsky effect across the NEA population. The reliability of these detections is maintained through a high-precision model—incorporating relativistic terms and the mass of 16 large asteroids—combined with specialized astrometric error treatment.

The Yarkovsky effect for 99942 Apophis

Vokrouhlický, David et al. (2015). Icarus

They used the determined rotation state, shape, size and thermophysical model of Apophis to predict the strength of the Yarkovsky effect in its orbit.

In this paper was investigated the possibility of detecting the Yarkovsky effect via precise orbit determination of near-Earth asteroids.

The Yarkovsky and YORP Effects

Vokrouhlický, D. et al. (2015). Asteroids IV

The study summarizes the knowledge about Yarkovsky, YORP, BYORP effects up to 2015.

A key comprehensive book on self-determination theory. If you don’t want to read all the articles and want a single source, you won’t find a better option.

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A chapter in a Personality Psychology book devoted to self-determination theory. An alternative to the “full” version from the 2017 book if you want to save time.

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Extrinsic rewards undermine altruistic tendencies in 20-month-olds.

Warneken, Felix & Tomasello, Michael (2008). Developmental Psychology

Experimental confirmation that a reward can trigger a shift in motivation from intrinsic to extrinsic.

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