Space Systems

Space Systems

Vocabulary

Elliptical

oval-shaped, like a flattened circle

Model

a representation of how something looks or works

Asteroid

a rocky object that revolves around the sun

Meteoroid

a small piece of rock or metal that travels in space around the sun

Meteor

a bright streak of light that passes through earth's atmosphere

Meteorite

a piece of a meteoroid that lands on Earth after passing through Earth's atmosphere

Light Year

The distance light travels in one year

Constellation

stars that appear to be in groups when viewed from earth

Galaxy

a group of billions of stars, dust, and gases in space held together by gravity