Glossary

Astronomer - an expert in the science of studying the heavenly bodies

Astronomy - science that deals with the sun, moon, planets, stars, and other heavenly bodies

Babylonian - early Mars observers

Basin - an area of low land surrounded by higher land

"Canali" - channel

CO2 - carbon dioxide

Crater - a hole formed by a meteor

Ejecta - soil that is blown out of a crater by a meteor

Ferric oxide - rust

Inorganic - not organic; neither animal nor vegetable

Landform - a physical feature on a planet

Lobed - shaped like an ear lobe

Mars - fourth planet from the Sun named after the Roman god of war

Meteor - chunk of rock that falls through the atmosphere and hits the surface

Organic - made up of parts or produced by a living thing

Proclaim - make know publicly and officially; declare publicy

Sessions - term or period of settings