Observing the sky, orbits and gravity
The celestial sphere and the constellations, the birth of astronomy from Ptolemy to Kepler and Newton, orbital motion, and the cycles of seasons, moon phases, tides and eclipses.
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Recto accelerateVerso to change velocity; to speed up, slow down, or change direction.
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Recto angular momentumVerso the measure of the motion of a rotating object in terms of its speed and how widely the object’s mass is distributed around its axis
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Recto aphelionVerso the point in its orbit where a planet (or other orbiting object) is farthest from the Sun
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Recto apogeeVerso the point in its orbit where an Earth satellite is farthest from Earth
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Recto apparent magnitudeVerso a measure of how bright a star looks in the sky; the larger the number, the dimmer the star appears to us
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Creative Commons Attribution 4.0 International
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- Source : https://openstax.org/books/astronomy/pages/preface — Licence : Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)
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- OpenStax — Astronomy (first edition)
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- Astronomie
- Langue
- English
- Version
- 3
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