Complex sentence: Exozodiacal dust is the exoplanetary analog of zodiacal dust, the 1--100 micrometre-sized grains of amorphous carbon and silicate dust that fill the plane of the solar system, especially interior to the asteroid belt.
Split into simpler sentences: Exozodiacal dust is 1-100 micrometre-sized grains of amorphous carbon and silicate dust that fill the plane of extrasolar planetary systems. It is the exoplanetary analog of zodiacal dust, the 1--100 micrometre-sized dust grains observed in the solar system, especially interior to the asteroid belt.