enFIVocabulary11
Astronomy:branch of science that deals with celestial objects,
Geocentric:representing the earth as the center, in former astronomical systems.
Orbit:curved path of a celestial object or spacecraft around a star, planet, or moon
Heliocentric:having or representing the sun as the center, astronomical model of the solar system.
Retrograde Motion:apparent motion of a planet in a direction opposite to that of other bodies within its system,
Ellipse: regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points
Astronomical unit: distance between the Earth and the sun, about 98 million miles or 150 million kilometers.
Rotation: rotating around an axis or center.
Revolution: the movement of one object around a center or another object,
Precession: movement of the axis of a spinning body around another axis due to a torque
Aphelion:point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.
Vocabulary
regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points
apparent motion of a planet in a direction opposite to that of other bodies within its system,
distance between the Earth and the sun, about 98 million miles or 150 million kilometers.
having or representing the sun as the center, astronomical model of the solar system.
point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.
curved path of a celestial object or spacecraft around a star, planet, or moon
movement of the axis of a spinning body around another axis due to a torque
representing the earth as the center, in former astronomical systems.
the movement of one object around a center or another object,
branch of science that deals with celestial objects,