Angles and Edges

For small meteoroids, 90% of the mass is lost to ablation as they comes through the Earth’s atmosphere. Edges, “corners,” rough surfaces, and any other protuberances are the first parts to ablate away. Put an ice cube in water and wait for 90% to melt. The “cube” that’s left will have no edges or points. It’s like that with meteorites.

If a rock has angles and edges but no fusion crust, then it is not a meteorite.

For small meteoroids, 90% of the mass is lost to ablation as it comes through Earth’s atmosphere. Edges, “corners,” and any other protuberances are the first parts to ablate away. Put an ice cube in water and wait for 90% to melt. The “cube” that’s left will have no edges or points. It’s like that with meteorites.