What are the three "common" substances that are believed to be important in planet formation?
A) electromagnetic radiation, electrical discharges (e.g., lightning), and water
B) rock, ices, and gas
C) solid, liquid, and gaseous hydrogen
D) hydrogen, helium, and neon gases

Question

Quizplus · Accepted Answer

Rock, ices, and gas are considered the three "common" substances important in planet formation. These materials are fundamental in the accretion process, where solid particles coalesce to form planetesimals and eventually planets. Rocks provide the solid core, ices (like water, ammonia, and methane) contribute to the formation of giant planets and their moons beyond the frost line, and gases (such as hydrogen and helium) are critical for the atmospheres of gas giants.

What Are the Three "Common" Substances That Are Believed to Be