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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  • Front accelerate
    Back to change velocity; to speed up, slow down, or change direction.
  • Front angular momentum
    Back 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
  • Front aphelion
    Back the point in its orbit where a planet (or other orbiting object) is farthest from the Sun
  • Front apogee
    Back the point in its orbit where an Earth satellite is farthest from Earth
  • Front apparent magnitude
    Back 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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Licence
Creative Commons Attribution 4.0 International CC-BY-4.0
Attribution
Source : https://openstax.org/books/astronomy/pages/preface — Licence : Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)
Source
OpenStax — Astronomy (first edition)
Retrieved on
Topic
Astronomy
Language
English
Version
3
Updated on

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