Celestial Bodies

Glowing, heated dust and vaporized gas that surrounds the icy comet nucleus as it travels near the Sun.

• coma
• comet
• moon
• planet

Solar winds cause heated gases to stream out of the nucleus, forming a tail, which points away from the Sun.

• coma
• comet
• moon
• planet

A celestial body of ice, dust, and rock with an elongated and elliptical orbit.

• coma
• comet
• moon
• planet

The four largest and brightest moons of Jupiter, which were discovered by Galileo Galilei: Ganymede, Io, Callisto, and Europa.

• Galilean Moons
• Moons of Saturn

The gravitationally-curved path of an object around a point in space.

• Galilean Moons
• Moons of Saturn
• Orbital Path

The force that causes objects with mass to attract one another.

• Galilean Moons
• Moons of Saturn
• Orbital Path
• gravity

A celestial body that revolves around a planet.

• moon
• star
• comet
• meteor

Something that orbits around another object.

• satellite
• sun
• galaxy

Remains of meteoroids that strike the surface of Earth or the Moon.

• meteor
• meteorites
• meteoid

A small object that enters Earth's atmosphere from space and burns due to friction, emitting light.

• meteor
• meteorites
• meteoid