6 Terms
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General astronomy
Industry: Astronomy
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General astronomy
penumbra
Astronomy; General astronomy
A partial shadow. The lighter, outer part of the shadow that is cast by the Moon onto the Earth during the solar eclipse.
pulsar
Astronomy; General astronomy
A spinning star that gives off beams of radiation that sweep around like the beam of light sent out by a lighthouse.
Ptolemaic system
Astronomy; General astronomy
Ptolemaic system has the Earth as its center, and the Sun, stars, and planets revolve around the Earth in circular orbits.
probe
Astronomy; General astronomy
A vehicle that is sent into outer space to collect information about objects in the universe. Space probes give information in the form of pictures and temperature readings.
rotation
Astronomy; General astronomy
The act of spinning on an axis is called spinning. The Earth makes one complete rotation every 24 hours.
red giant
Astronomy; General astronomy
A very large, bright star that looks red because its surface is not as hot as the surface of most other stars.
revolution
Astronomy; General astronomy
The act of revolving around a central point or object. The Earth makes one complete revolution around the Sun in about 365 days.
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