At the center of the protostellar disk.

The layer in the Sun hat produces energy.

Mercury, Venus, Earth, Mars.

Deep,massive,gas atmospheres, which are made up of mostly of hydrogen and helium.

A celestial body that orbits the sun and is round because of its own gravity.

A force of attraction between objects that is due to their masses and the distances between them.

Dark areas that form on the surface of the sun.

Earths satellite.

The largest planet in the solar system.

Any of the minor bodies in the Kuiper Belt outside the orbit of Neptune.

When rocky planetismals collided.

Core, radiative zone, convective zone, photosphere, chromosphere, and corona.

Has a surface color of red.

A near-twin to jupiter.

a small of ice, rock, and dust that follows a highly elliptical orbit around the sun.

The gravity between objects increases as the masses of the objects increase.

An explosive release of energy that can extend outward as far as the sun's outer atmosphere.

The planet that supports life.

A disk of material that circles a planet and consists of orbiting particles.

A small, irregularly shaped, rocky object that orbits the sun.

Solar nebula collapses, the sun forms, the planetesimals form, and planets form

The process by which two or more low-mass atomic nuclei fuse to form another, heavier nucleus.

The average distance between the sun and earth.

The most distant planet from the sun.

A sand grain-to boulder-sized,sized,rocky body that travels through space.