different parts or features of a situation or idea
aspects
the layer of gases surrounding a planet
atmosphere
the level or amount of something
degree
to discover or notice something, especially something hidden
to detect
very small, dry particles often found in the air or on surfaces
dust
extremely important or basic to something
fundamental
a tool or device used for a specific purpose, especially in science
instrument
the visible features of an area of land
landscape
to cause something to happen
to lead to
a large, flat area of land with few trees
plain
evidence that shows something is true
prove
an object sent into space to orbit a planet and collect information
satellite
a low area of land between mountains or hills
valley
extremely large or wide
vast
to think with curiosity or ask yourself questions about something
to wonder
progress or improvement, especially in science or technology
advance
