The more mass an object has, the more gravitational attraction it has. The greater the distance between two objects, the less their gravitational attraction.

Gravity pulled together a cloud of interstellar gas and dust (called a nebula). As the nebula spun, gravity condensed the gases into the center to form the Sun. Eventually, the gravity of smaller pieces of matter drew objects to them to form the planets.

Gravity pulled together a cloud of interstellar gas and dust (called a nebula). As the nebula spun, gravity condensed the gases into the center to form the Sun. Eventually, the gravity of smaller pieces of matter drew objects to them to form the planets.

It states that any two masses attract each other more when they are more massive (greater mass) and closer together (less distance).

A celestial body that (a) is in orbit around the Sun, (b) is round or nearly round in shape (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite (moon)

Small rocky bodies orbiting the sun, especially between the orbits of Mars and Jupiter

A small body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

The amount by which an object's orbit around another body deviates from a perfect circle.

The curved path of a celestial object or spacecraft around a star, planet, or moon

A circular movement of an object around a center or an axis.

The movement of one object around a center or around another object

A unit of measurement equal to approximately the distance from the center of the sun to the center of galaxy

A unit of measurement equal to approximately the distance from the center of the earth to the center of the moon.

A unit of measurement equal to approximately the distance from the center of the earth to the center of the sun.

A unit of measurement equal to approximately the distance from the center of the earth to the end of the solar system.

The conditions in the gases surrounding a star including the make-up of gases, temperature, and thickness of the gases.

The conditions of the liquids surrounding a planet including their make-up, temperature, and thickness.

The conditions in the gases surrounding a planet including the make-up of gases, temperature, and thickness of the gases.

When the conditions of the planet are such that they dissipate into space form the planet.

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A meteor that survives its passage through the earth's atmosphere and part of it reaches the ground.

A small body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

A meteor that survives its passage through the earth's atmosphere and part of it reaches the ground.

A small body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A meteor that survives its passage through the earth's atmosphere and part of it reaches the ground.

A small body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

A meteor that survives its passage through the earth's atmosphere and part of it reaches the ground.

A small body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

A natural satellite that orbits a planet.

An astronomical body that orbits a star, is massive enough for its own gravity to make it round, and has "cleared its neighborhood" of smaller objects around its orbit.

A celestial body that (a) is in orbit around the Sun, (b) is round or nearly round in shape (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite (moon)

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

The amount by which an object's orbit around another body deviates from a perfect circle.

The curved path of a celestial object or spacecraft around a star, planet, or moon

A law stating that any two masses attract each other more when they are more massive (greater mass) and closer together (less distance).

The movement of one object around a center or around another object

A model of the Solar System in which the Sun is the center.

A model of a galaxy in which the Earth is the center.

A model of the Solar System in which the Earth is the center.

A model of the Solar System in which a geode is the center.

A property of matter by which it stays at rest or in motion in a straight line, until it is changed by an external force

Gravity pulled together a cloud of interstellar gas and dust (called a nebula). As the nebula spun, gravity condensed the gases into the center to form the Sun. Eventually, the gravity of smaller pieces of matter drew objects to them to form the planets.

A natural phenomenon by which all things with mass are brought toward one another. This force is dependent on the mass of the objects and the distance between objects.

The tendency of like charges to repel each other

A model of the Solar System in which helium is the center.

A model of the Solar System in which the Earth is the center.

A model of the Solar System in which the Sun is the center.

A model of the Solar System in which the Moon is the center.

A law stating that any two masses repel each other more when they are more massive (greater mass) and closer together (less distance).

A law stating that any two masses attract each other more when they are more massive (greater mass) and closer together (less distance).

A law stating that any two masses attract each other more when they are less massive (greater mass) and further apart (more distance).

A law stating that any two masses repel each other more when they are less massive (less mass) and further apart (more distance).

An astronomical body that orbits a star, is massive enough for its own gravity to make it round, and has "cleared its neighborhood" of smaller objects around its orbit.

celestial body that (a) is in orbit around the Sun, (b) is round or nearly round in shape (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite (moon)

An astronomical body that orbits planet; also called a "satellite."

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A sphere spinning on its axis

A circular movement of an object around a center or an axis.

The curved path of a celestial object or spacecraft around a star, planet, or moon

The amount by which an object's orbit around another body deviates from a perfect circle.

An astronomical body that orbits a star, is massive enough for its own gravity to make it round, and has "cleared its neighborhood" of smaller objects around its orbit.

A large body of matter from outer space that enters the earth's atmosphere; also known as a "shooting star."

An astronomical body that orbits planet; also called a "satellite."

A celestial body consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles

The curved path of a celestial object or spacecraft around a star, planet, or moon

A circular movement of an object around a center or an axis.

The movement of one object around a center or around another object

The amount by which an object's orbit around another body deviates from a perfect circle.

A circular movement of an object around a center or an axis.

The curved path of a celestial object or spacecraft around a star, planet, or moon

The movement of one object around a center or around another object

The amount by which an object's orbit around another body deviates from a perfect circle.

A luminous sphere of plasma held together by its own gravity. Usually composed of helium and hydrogen and undergoes nuclear fusion to produce light and heat.

The gravitationally bound system made of a star and all the objects that orbit it.

Small rocky bodies orbiting the sun, especially between the orbits of Mars and Jupiter

A unit of measurement equal to approximately the distance from the center of the earth to the center of the sun.

The star at the center of our galaxy.

The star 4 light years from the center of our Solar System.

The star at the edge of our Solar System

The star at the center of our Solar System

An astronomical body that orbits planet; also called a "satellite."

A celestial body that (a) is in orbit around the Sun, (b) is round or nearly round in shape (c) has not cleared the neighborhood around its orbit, and

Any natural object outside of the Earth's atmosphere. Examples include asteroids, comets, meteroids, moons, planets, and stars

A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

A property of matter by which it always keeps moving

A property of matter by which it stays at rest or in motion in a straight line, until it is changed by an external force

A property of matter by which it never moves.

A property of matter by which it moves in the opposite direction

The amount of wate in an object.

The amount of volume in an object

The amount of charge in an object.

The amount of matter in an object.

A type of astronomical object consisting of a rocky sphere that reflects light.

A type of astronomical object consisting of a luminous sphere of plasma held together by its own gravity. Example: Sun

A type of astronomical object consisting of a gaseous sphere that absorbs light.

A type of galaxy sized object.