According to the nebular theory, how did the asteroid belt form?

An icy leftover planetesimal orbiting the Sun is

What would happen to the planets in a solar system where the central star did not have a strong wind?

Primitive meteorites can be distinguished from other meteorites and terrestrial rocks because they

The greatest number of asteroids are found

Kepler’s second law, which states that as a planet moves around its orbit it sweeps out equal areas in equal times, means that

The force due to gravity between two objects can be described using the equation Fg = G M1 M2 / d2. In this equation, what does G represent?

If you heat a gas so that collisions are continually bumping electrons to higher energy levels, when the electrons fall back to lower energy levels the gas produces

Which of the following describes the light that can be detected from a person?

From Kepler’s third law, a hypothetical planet that is twice as far from the Sun as Earth should have a period of