'This solid center of a comet is usually around 10 miles or less in diameter & consists of ice & dust particles'
the nucleus (or core)
ASTRONOMY: This solid center of a comet is usually around 10 miles or less in diameter & consists of ice & dust particles
This solid center of a comet is usually around 10 miles or less in diameter & consists of ice & dust particles
This solid center of a comet is usually around 10 miles or less in diameter & consists of ice & dust particles
ASTRONOMY
the nucleus or core
ASTRONOMY