How does a meteoroid become a meteorite after entering Earth’s atmosphere?
A meteoroid becomes a meteorite by surviving its passage through Earth’s atmosphere.12
While most meteoroids are destroyed by ablation and fragmentation caused by intense frictional heating and aerodynamic pressure, some objects reach the surface if they possess a large enough initial mass, high crushing strength, or a relatively low entry velocity.3
As a meteoroid enters the atmosphere, its kinetic energy is converted into heat, creating the luminous phenomenon known as a meteor. If the object is not completely consumed, it undergoes "dark flight"—a final descent at low velocity after atmospheric braking has slowed it down. Upon landing, the object is classified as a meteorite. These survivors often feature a dark, glassy "fusion crust" resulting from surface melting during their fiery descent.312