Movement in Space

Front

Astronomer Noun

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[uh-stron-uh-mer]

Back

Astronomer

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A scientist who studies celestial objects, space, and the physical universe as a whole to understand their properties.

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Example: An astronomer uses a telescope to observe stars and planets in space.

Front

Observation Noun

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[ob-zur-vay-shun]

Back

Observation

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The action or process of carefully watching something or someone in order to gain information for scientific study.

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Example: Plants bend towards light, showing how observation helps understand movement in space.

Front

Satellite Noun

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[sat-uh-lite]

Back

Satellite

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A celestial body, such as a moon, or an artificial object that orbits a planet or other larger body.

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Example: The Moon orbits Earth due to gravity, showing how satellites move in space.

Front

Star Noun

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[star]

Back

Star

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A giant, luminous ball of superheated gas, or plasma, that produces its own light and heat through nuclear fusion.

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Example: The Sun, a star, emits light and heat to Earth, demonstrating nuclear fusion.

Front

Planet Noun

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[plan-it]

Back

Planet

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A large celestial body that orbits a star, is rounded by its own gravity, and has cleared its orbital path.

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Example: The image shows Earth as a planet, highlighting its spherical shape and rotation.

Front

Meteor Noun

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[mee-tee-or]

Back

Meteor

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A streak of light in the sky produced by a small piece of rock or ice burning up in Earth's atmosphere.

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Example: A meteor appears as a bright streak of light when a rock or ice burns up in Earth's atmosphere.

Front

Comet Noun

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[kom-it]

Back

Comet

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A celestial object made of ice and dust that develops a glowing tail as it approaches and is heated by the sun.

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Example: This image shows a comet with labeled parts like the nucleus, coma, and tail, explaining how it forms a glowing tail.

Front

Orbit Noun

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[or-bit]

Back

Orbit

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The curved, gravitational path of a celestial object or spacecraft around a star, planet, or moon.

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Example: The Moon orbits Earth due to gravity, shown by arrows for gravitational force and velocity.

Front

Constellation Noun

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[kon-stuh-lay-shun]

Back

Constellation

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A group of stars forming a recognizable pattern that is traditionally named after its apparent form or a mythological figure.

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Example: The image shows the Orion constellation with labeled stars, illustrating how stars form recognizable patterns.

Front

Apparent Motion Noun

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[uh-pair-ent moh-shun]

Back

Apparent Motion

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The perceived movement of an object in the sky, which can differ from its actual motion due to the observer's movement.

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Example: Light bulbs flash in sequence to create the illusion of movement from left to right.