angle: The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
arc: A curve, often mapping out what appears to be part of a circle.
array: A broad and organized group of objects. Sometimes they are instruments placed in a systematic fashion to collect information in a coordinated way. Other times, an array can refer to things that are laid out or displayed in a way that can make a broad range of related things, such as colors, visible at once. The term can even apply to a range of options or choices.
astronomer: A scientist who works in the field of research that deals with celestial objects, space and the physical universe.
atmosphere: The envelope of gases surrounding Earth, another planet or a moon.
black hole: A region of space having a gravitational field so intense that no matter or radiation (including light) can escape.
cloud: A plume of molecules or particles, such as water droplets, that move under the action of an outside force, such as wind, radiation or water currents. Â
concave: A term for the shape of a surface that is rounded somewhat, like the inside of a bowl.
concrete: To be solid and real. (in construction) A simple, two-part building material. One part is made of sand or ground-up bits of rock. The other is made of cement, which hardens and helps bind the grains of material together.
convex: A surface that possesses a shape that is rounded outward.
cosmos: (adj. cosmic) A term that refers to the universe and everything within it.
degree: (in geometry) A unit of measurement for angles. Each degree equals one three-hundred-and-sixtieth of the circumference of a circle.
density: The measure of how condensed some object is, found by dividing its mass by its volume.
environment: The sum of all of the things that exist around some organism or the process and the condition those things create. Environment may refer to the weather and ecosystem in which some animal lives, or, perhaps,…
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