Why is NASA sending a spacecraft to a metal world? - Linda T. Elkins-Tanton

TL;DR

NASA is sending a spacecraft to explore asteroid 16 Psyche, which is composed mostly of nickel and iron, providing a unique opportunity to study Earth's core.

Transcript

Somewhere between the orbits of Mars and Jupiter, about 500 million kilometers away from Earth, floats a metallic orb the size of Massachusetts. That’s no moon...it’s 16 Psyche, one of the most massive asteroids in the solar system. And it is the asteroid our droids are looking for. We humans have managed to send robotic spacecraft to all sort... Read More

Key Insights

• ♻️ Asteroid 16 Psyche contains a significant amount of nickel and iron, distinguishing it from other asteroids.
• 🎟️ NASA's mission to Psyche in 2026 aims to study the asteroid's surface, composition, and magnetic field.
• 💯 By studying Psyche, scientists can indirectly gain insights into Earth's core and magnetic field generation.
• 💯 Psyche's exposed metallic core presents a unique opportunity to understand the formation and evolution of terrestrial planets.
• ❓ NASA's spacecraft will be equipped with advanced instruments such as a spectrometer and magnetometer to study Psyche in detail.
• 💁 Chemical analysis of Psyche's surface can provide clues about the elements present during the early stages of planet formation.
• 🏑 Studying Psyche's magnetic field can contribute to our understanding of Earth's own magnetic field and its role in protecting our planet.

Questions & Answers

Q: Why is NASA interested in asteroid 16 Psyche?

NASA is interested in Psyche because it presents a rare opportunity to study an exposed metallic core, similar to Earth's core. It could provide insights into our own planet's inner workings and formation.

Q: How will NASA study Psyche's surface and composition?

NASA's spacecraft will be equipped with instruments such as a spectrometer, which will analyze gamma rays and neutrons produced when Psyche is struck by cosmic rays. This will help determine the elements present on the asteroid's surface.

Q: What can studying Psyche's magnetic field reveal about Earth?

By measuring Psyche's magnetic field, scientists can learn more about how Earth's own magnetic field is generated at its core. This could provide insights into the dynamics of our planet's magnetic field.

Q: What is unique about asteroid 16 Psyche?

Psyche is unique because it appears to have been a planetesimal on its way to becoming a planet before being impacted by other objects, resulting in the loss of its rocky crust and leaving only the metallic core exposed.

Summary & Key Takeaways

• Asteroid 16 Psyche is one of the largest known asteroids in the solar system, consisting mainly of nickel and iron.

• NASA plans to send a robotic spacecraft to Psyche in 2026 to study its surface and composition up close.

• By analyzing Psyche's makeup and magnetic field, scientists hope to gain insights into Earth's core and its formation.