Universe and Space Vocabulary Quiz

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

• Solar System

• Galaxy

• Nebula

• Universe

A luminous ball of gas, mostly hydrogen and helium, held together by its own gravity and undergoing nuclear fusion.

• Planet

• Star

• Comet

• Asteroid

The collection of eight planets and their moons in orbit around the sun, together with smaller bodies such as asteroids, meteoroids, and comets.

• Galaxy

• Solar System

• Universe

• Nebula

A natural satellite that orbits a planet.

• Comet

• Asteroid

• Moon

• Star

A small rocky body orbiting the sun, mostly found in the asteroid belt between Mars and Jupiter.

• Comet

• Asteroid

• Meteor

• Moon

An icy body that releases gas or dust, often characterized by a visible coma and a tail.

• Comet

• Asteroid

• Meteor

• Planet

A giant cloud of dust and gas in space, often the birthplace of stars.

• Galaxy

• Nebula

• Black Hole

• Solar System

A region of space having a gravitational field so intense that no matter or radiation can escape.

• Black Hole

• Nebula

• Star

• Planet

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

• Gravity

• Orbit

• Light Year

• Satellite

The force that attracts two bodies towards each other, causing apples to fall to the ground and the planets to orbit the sun.

• Gravity

• Orbit

• Light Year

• Satellite