These 'shooting stars' are actually space rocks—meteoroids—made visible by the heat generated when they enter the Earth's atmosphere at high speeds.” These bits of ice and debris range in size from a speck of sand to a boulder. Larger objects are called asteroids, and smaller, planetary dust, Luhman explains.
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These 'shooting stars' are actually space rocks—meteoroids—made visible by the heat generated when they enter the Earth's atmosphere at high speeds.” These bits of ice and debris range in size from a speck of sand to a boulder. Larger objects are called asteroids, and smaller, planetary dust, Luhman explains.