Asteroid ‘Families’ Reveal Solar System’s Secret History

image via New Scientist

September 26, 2025, 10:45 AM

• •Asteroid families are groups of asteroids with shared orbital characteristics, formed from collisions.
• •Studying these families helps trace asteroid origins and understand potential impact risks to Earth.
• •The James Webb Space Telescope is used to study the spectra of asteroids, identifying parent bodies.
• •Understanding asteroid families aids in defending Earth from potentially hazardous space rocks.

Asteroid families, groupings of related space rocks, provide insights into the history of the solar system. These families are formed from the debris of asteroid collisions, with fragments sharing similar orbital paths. Studying these families helps scientists trace the origins of asteroids, including potentially hazardous ones that could threaten Earth. Understanding asteroid families allows us to better understand our solar system and potentially defend our planet from future space rock impacts.

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