Serving The Meteorite Community Since 2002

An Interview with ChatGPT about Meteorites and Meteorite Collecting

AI generated image by OpenArt with prompt: "1960s robot holding a meteorite"

AI generated image by OpenArt with prompt: “1960’s robot holding a meteorite”

With AI all the rage these days, and the robot overlords have yet to launch their attack on us humans, I thought I would ask ChatGPT a few basic questions about meteorites to see where we are at. But first, let me share a couple rules I have for engaging AI. My first rule is that I don’t compete with AI. In many ways, AI is vastly “smarter” than we are both individually and collectively so that ship has sailed.

And my second rule is I assume AI is correct. Maybe not correct in the traditional sense, but I give it the benefit of the doubt that from some perspective, from some direction, in some universe or time dimension, it is right. See the first rule if you don’t like this one. Like with regard to Google’s AI named Bard providing an “incorrect” answer about the James Webb Telescope, I actually believe Bard was correct. The adults in the room focused on the factual timeline of discoveries, while I focused on the question prompt that the answer was for a 9-year old kid. The convolutions needed to make the “real” correct answer correct are so nuanced and sequenced, that the actual answer in question becomes irrelevant at the fourth grade level.

Basically, I treat AI as if I am encountering an intelligent alien life form. I vigorously write notes with my right hand when learning from it, and constantly search for a way to unplug it with my left hand. Since Artificial Intelligence is here to stay, and will always be more powerful tomorrow than it is today, I figure it’s best to get to know it on a personal level so at the moment, I consider AI to be a friend.

These meteorite questions mirror popular questions I am often asked about. While it would be more fun to discuss the difference between mesosiderites and pallasites, I thought about what a meteorite-curious person might ask ChatGPT. Overall, I’m impressed with the responses (which were generated in a few seconds!), and ChatGPT did not seem to “hallucinate” like it has been accused of in some situations. But my curiosity did get the best of me first, so we will start with the mesosiderite-pallasite question just to get things rolling. Enjoy, and feel free to use a screen reader if you have one. Oh, I did cut out a little of the ChatGPT rambling and summarizing at the end of the response, but this is all the good stuff. ChatGPT has a tendency to repeat itself.

Martin: What is the difference between mesosiderites and pallasites?

ChatGPT: Mesosiderites and pallasites are two distinct types of meteorites, and they differ significantly in their composition and characteristics:


  • Composition: Mesosiderites are a type of stony-iron meteorite, which means they are composed of both silicate minerals (similar to stony meteorites) and metal (similar to iron meteorites). However, mesosiderites are distinctive because their silicate component consists of a complex mixture of various minerals, including pyroxenes, plagioclase feldspar, and olivine.
  • Appearance: Mesosiderites often have a mottled appearance, with metal-rich areas intermixed with silicate material. The metal can appear as shiny, metallic veins or nodules within the rock.
  • Formation: The exact origin of mesosiderites is still a subject of scientific investigation, but it is believed that they formed through a complex process involving both silicate-rich and metal-rich materials. Some hypotheses suggest that mesosiderites may be the result of collision and mixing between different types of parent bodies, such as asteroids.


  • Composition: Pallasites are a unique type of meteorite that falls under the stony-iron category. They consist of a distinctive combination of olivine crystals (a greenish-yellow mineral) embedded within a metallic matrix of iron and nickel. The olivine crystals in pallasites can be large and well-formed, making them highly prized by collectors.
  • Appearance: Pallasites are known for their striking appearance due to the contrasting colors of the olivine crystals and the metal matrix. When cut and polished, they reveal beautiful cross-sections with a crystalline pattern of olivine surrounded by the metallic matrix.
  • Formation: Pallasites are thought to have formed at the boundary between the core and mantle of a differentiated asteroid or planetary body. These meteorites are considered remnants of early planetary building blocks and provide valuable insights into the processes that occurred during the early solar system’s formation.
  • In summary, the key difference between mesosiderites and pallasites lies in their composition and origin. Mesosiderites are stony-iron meteorites with a mixture of silicate minerals and metal, while pallasites are stony-iron meteorites known for their distinctive olivine crystals embedded in a metallic matrix. Both types of meteorites are valuable for scientific study and are prized by collectors for their unique characteristics.

Martin: What is a meteorite?

ChatGPT: A meteorite is a solid fragment of a meteoroid, which is a small celestial object or space rock that enters Earth’s atmosphere from outer space. When a meteoroid survives its journey through the Earth’s atmosphere and reaches the planet’s surface, it is referred to as a meteorite.

The process of a meteoroid entering Earth’s atmosphere and producing a bright streak of light as it burns up due to the intense heat and pressure is called a meteor. This streak of light is often referred to as a shooting star. Most meteors are relatively small and completely disintegrate during their atmospheric entry, never reaching the Earth’s surface. However, if a meteoroid is large enough to withstand the heat and pressure, it can land on Earth as a meteorite.

Meteorites come in various types based on their composition, with the three main categories being stony meteorites (composed primarily of silicate minerals), iron meteorites (composed mainly of iron and nickel), and stony-iron meteorites (a combination of silicate minerals and metal). These meteorites provide valuable insights into the formation and history of our solar system, and they are studied by scientists to learn more about the early stages of celestial body formation. Meteorites can vary in size from small pebbles to large masses, and they can have significant scientific and sometimes even cultural significance.

Martin: What meteorite do you find most interesting?

ChatGPT: As an artificial intelligence language model, I don’t have personal interests or preferences. However, I can share information about a meteorite that many scientists find particularly interesting due to its unique characteristics: the Murchison meteorite.

The Murchison meteorite, which fell in Australia in 1969, is notable for several reasons:

  • Organic Compounds: Murchison is a carbonaceous chondrite meteorite, and it is rich in organic compounds, including amino acids, which are the building blocks of life. This discovery sparked significant interest in the possibility of extraterrestrial organic molecules contributing to the origins of life on Earth.
  • Preserved Primitive Materials: The Murchison meteorite is considered one of the most primitive meteorites ever found. It contains materials that have remained largely unaltered since the early solar system formation, providing insights into the conditions and chemistry of that time.
  • Isotopic Anomalies: Isotopic analyses of Murchison have revealed unusual isotopic ratios for certain elements, such as oxygen and nitrogen. These anomalies suggest a complex history involving multiple sources and processes in the early solar system.
  • Extensive Study: Murchison has been extensively studied by scientists over the years, contributing to our understanding of the formation and evolution of the solar system.

Martin: Do people collect meteorites?

ChatGPT: Yes, people do collect meteorites, and meteorite collecting is a popular hobby for enthusiasts and scientists alike. Meteorites are fascinating and valuable objects that offer insights into the history and formation of our solar system, making them highly sought after by collectors and researchers. Here are some key points about meteorite collecting:

  • Enthusiast Collectors: Many individuals are passionate about meteorites and collect them as a hobby. They may purchase meteorites from dealers, attend meteorite shows and auctions, or even go meteorite hunting in areas where meteorites have been known to fall.
  • Scientific Research: Meteorite collections are not limited to private collectors. Museums, universities, and research institutions maintain extensive meteorite collections for scientific study and education. These collections help scientists conduct research on the origins of our solar system, planetary formation, and the composition of celestial bodies.
  • Classification: Meteorites are classified based on their composition and characteristics. This classification is crucial for understanding the diversity of meteorites and their origins. Both amateur and professional collectors contribute to this process by submitting newly discovered meteorites for classification.
  • Protection and Preservation: The collection and sale of meteorites are regulated in some countries to ensure the responsible and ethical acquisition of these valuable specimens. Certain meteorites may have cultural or historical significance and be subject to legal protections.
  • Trading and Sales: Meteorites are bought, sold, and traded in the collector market. The rarity, type, size, and condition of a meteorite can greatly influence its market value. Some meteorites can be quite expensive due to their uniqueness or historical importance.
  • Education and Outreach: Meteorite collections, whether in private hands or held by institutions, often serve an educational purpose. Museums and science centers use meteorites to engage the public in the study of astronomy, geology, and the history of our solar system.

Overall, meteorite collecting is a diverse and dynamic field that combines scientific research, historical preservation, and a fascination with the wonders of space. Collectors and institutions play a vital role in advancing our understanding of the cosmos by acquiring, preserving, and studying these extraterrestrial artifacts.

Martin: Do you know any meteorite collectors?

ChatGPT: I don’t have access to specific information about individuals or their personal interests, including whether I know any meteorite collectors. However, meteorite collectors can be found worldwide, and they come from various backgrounds, including amateur enthusiasts, scientists, and institutions. Some collectors may be well-known within the meteorite community or have their collections featured in museums or research institutions.

If you’re interested in connecting with meteorite collectors or learning more about meteorites, you may consider joining online forums, attending meteorite shows and events, or reaching out to meteorite-related organizations and clubs. These avenues can help you connect with individuals who share your interest in meteorites and can provide valuable insights into the field of meteorite collecting.

AI generated image by OpenArt with prompt: "robot reading the meteorite times"

AI generated image by OpenArt with prompt: “robot reading the meteorite times”

Martin: Are meteorites radioactive?

ChatGPT: Most meteorites are not significantly radioactive. However, there are exceptions. Some meteorites, particularly certain types of stony meteorites known as carbonaceous chondrites, can contain trace amounts of radioactive isotopes. These isotopes are typically present in very small quantities and are not a cause for concern in terms of radioactivity hazards.

The radioactive isotopes found in meteorites are usually those that are naturally occurring and have long half-lives, such as isotopes of potassium, uranium, and thorium. The levels of radioactivity in meteorites are generally much lower than what you would find in naturally occurring radioactive minerals on Earth.

In fact, meteorites are often used in scientific research to study the isotopic compositions of elements, including radioactive isotopes, as they can provide important information about the history and age of the solar system. Researchers take precautions when handling radioactive meteorite samples, but the radioactivity levels are typically very low and do not pose a health risk to humans.

It’s important to note that not all meteorites contain radioactive materials, and the majority of meteorites are non-radioactive. If you are concerned about the radioactivity of a specific meteorite, it’s a good idea to consult with experts or scientific institutions for further information and guidance.

Martin: Where do meteorites come from?

ChatGPT: Meteorites come from various sources within our solar system, primarily from three main types of celestial bodies:

  • Asteroids: The majority of meteorites are believed to originate from asteroids. Asteroids are rocky objects that orbit the Sun, primarily located in the asteroid belt, a region between the orbits of Mars and Jupiter. Occasionally, collisions or other events on asteroids can eject fragments into space, which may then enter Earth’s atmosphere as meteoroids and, if they survive the journey, become meteorites when they land on Earth.
  • Mars: A small number of meteorites are believed to come from Mars. These are called Martian meteorites or Mars rocks. They are thought to have been blasted off the Martian surface by impacts and eventually found their way to Earth. Martian meteorites are valuable for studying the geology and possible presence of life on Mars.
  • The Moon: Another source of meteorites is the Moon. These lunar meteorites are thought to have been ejected from the Moon’s surface by impacts and then traveled through space to Earth. They provide insights into the geology and history of the Moon.

It’s important to note that while most meteorites come from these sources, there can be exceptions. For example, some meteorites may originate from other celestial bodies, and a few may even be from comets. The precise identification of a meteorite’s source is often determined through scientific analysis, including the examination of its mineral composition and isotopic ratios.
Overall, meteorites provide valuable information about the formation and history of our solar system, and studying them helps scientists piece together the story of how celestial bodies came into existence and evolved over billions of years.

Martin: Are meteorites valuable?

ChatGPT: The value of a meteorite can vary widely based on several factors, including its type, rarity, size, condition, and scientific significance. Here are some key points to consider regarding the value of meteorites:

  • Type of Meteorite: Different types of meteorites have different values. Iron meteorites, which are composed mainly of iron and nickel, can be quite valuable, especially if they are large and well-preserved. Stony meteorites and stony-iron meteorites also vary in value based on their composition and rarity.
  • Rarity: Some meteorites are rarer than others. For example, certain types of carbonaceous chondrites are considered rare and can be highly valuable due to their primitive nature and the organic compounds they may contain.
  • Size: Larger meteorites are generally more valuable than smaller ones. A large meteorite with an interesting shape or features may be particularly sought after by collectors.
  • Condition: The condition of a meteorite is essential. Well-preserved meteorites with minimal weathering or damage are typically more valuable than those in poor condition.
  • Scientific Significance: Meteorites that are of particular interest to scientists due to their unique characteristics or potential for research may also have higher value, especially when they contribute to our understanding of the solar system’s history.
  • Historical or Cultural Significance: Some meteorites have historical or cultural significance, such as the Canyon Diablo meteorite, which was associated with the impact that created Meteor Crater in Arizona. Such meteorites may have additional value.
  • Market Demand: Market demand can influence the value of meteorites. Rarity and scientific importance may drive collector interest and affect the market price.
  • Provenance: The documented history or provenance of a meteorite can also impact its value. Knowing where and when a meteorite was found and its journey to collectors can add to its story and value.

It’s essential to note that while some meteorites can be quite valuable, the vast majority of meteorites are not valuable in a monetary sense. Many meteorite enthusiasts and collectors are motivated by their passion for these extraterrestrial objects and their scientific and historical significance rather than their monetary value.

If you are interested in meteorites, it’s important to do your research, consult with experts, and be cautious when buying or selling them to ensure fair and ethical transactions.

Martin: How often do meteorites fall?

ChatGPT: Meteorites fall to Earth with some regularity, but the frequency of meteorite falls varies significantly depending on several factors. Here are some key points to consider:

  • Small Meteoroids: Tiny meteoroids, often referred to as micrometeoroids, constantly enter Earth’s atmosphere. These particles are too small to produce visible meteors, and they burn up high in the atmosphere. They fall to Earth in large quantities every day but usually go unnoticed.
  • Visible Meteors: Larger meteoroids, which are large enough to produce visible meteors or “shooting stars,” enter the atmosphere less frequently. On any given night, you might see a few meteors, especially during meteor showers, which occur when Earth passes through the debris left behind by a comet.
  • Meteorite Falls: Meteorite falls, where meteoroids survive their journey through Earth’s atmosphere and reach the surface as meteorites, are relatively rare events. They occur around the world a few times each year. However, most meteorite falls go unnoticed because they often happen in uninhabited areas or over oceans.
  • Meteorite Finds: In addition to meteorite falls, meteorites can also be found on Earth’s surface without a dramatic fall event. These meteorites are known as “finds” and are discovered through various means, including by meteorite hunters or by chance discovery by people in areas where meteorites are more likely to be preserved.
  • Frequency Variability: The frequency of meteorite falls can vary from year to year and region to region. Some years may see more meteorite falls than others, depending on the concentration of debris in Earth’s orbital path and other factors.
  • It’s important to note that while meteorite falls are relatively rare, they are of great scientific interest because they provide fresh samples of extraterrestrial material for study. When a meteorite fall does occur and is recovered, it can provide valuable insights into the composition and nature of celestial bodies and the early solar system.

Martin: What are good websites about meteorites?

ChatGPT: There are several excellent websites dedicated to meteorites and meteoritics, offering a wealth of information for enthusiasts, collectors, researchers, and anyone interested in learning more about these extraterrestrial objects. Here are some recommended websites:

  • The Meteoritical Society ( The official website of The Meteoritical Society, an international organization of scientists and enthusiasts interested in meteorites and related topics. It provides resources on meteorite classification, research, and events.
  • NASA’s Meteorite Compendium ( This NASA website offers a wealth of information about meteorites, including images, classifications, and educational materials.
  • Meteorite Exchange ( A comprehensive resource for meteorite enthusiasts and collectors, featuring articles, forums, and a marketplace for buying and selling meteorites.
  • The Planetary Society’s Meteorites Page ( The Planetary Society provides a user-friendly introduction to meteorites, including their history, types, and significance.
  • Meteorite Market ( While primarily a site for buying and selling meteorites, it also provides valuable information about meteorite types, classifications, and the meteorite market.
  • International Meteor Organization ( This site focuses on meteor showers, fireballs, and meteor observations but also offers valuable resources about meteorites and meteorite identification.
  • The Meteorite Men ( The website of Geoff Notkin and Steve Arnold, known as “The Meteorite Men.” They are meteorite hunters who share their adventures and knowledge about meteorites.
  • Meteoritical Bulletin Database ( This database provides access to the official records of meteorite discoveries and classifications, making it a valuable resource for meteorite researchers.
  • American Meteor Society ( While primarily focused on meteor shower observations, the AMS website offers useful information on meteorites and fireballs, including reports from witnesses.
  • Meteorite Times Magazine ( An online magazine dedicated to meteorites, featuring articles, news, and educational content.

And one more question, well more of a prompt:

Martin: “Martin Horejsi meteorites”

ChatGPT: Martin Horejsi is a well-known and respected figure in the meteorite community. He is an educator, writer, and meteorite enthusiast who has made significant contributions to the field of meteoritics, particularly in the realm of education and outreach. While he may not be widely recognized in the mainstream, he is highly regarded among meteorite collectors, educators, and those interested in the study of meteorites.

Martin Horejsi has written extensively about meteorites and related topics, often focusing on their educational value and the use of meteorites in science classrooms. He has contributed to meteorite-related publications and websites, sharing his knowledge and passion for these extraterrestrial objects. Additionally, he has been involved in organizing meteorite-related events and presentations to help educate people about meteorites and their significance.

If you are interested in learning more about meteorites or connecting with the meteorite community, you may find Martin Horejsi’s work and contributions to be valuable resources for enhancing your understanding of these fascinating space rocks.

Well, there you go!

Until next time….

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