Astronomy Flashcards
(23 cards)
small celestial bodies that were fused together to make the planets of the solar system
Moon sized or larger embryos within protoplanetary discs that have internal melting to produce differentiated interiors
A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the realease of energy
a celestial body moving about the sun, consisting of a central mass surrounded by a envelope of dust and gas that mayform a tail that streams away from the sun.
Cosmologist
A physicist that specializes in the study of the formation and evolution of the universe
Angular Velocity
The time rate of change of angular position of a rotating body
The curved path, usually elliptical described by a planet, satellite,etc, around a celestial body ,as the sun
Period
How long an object takes to complete one cycle of revolution
Revolve
To move in a circular or curving course of orbit
Rotation
The movement or path of the earth or a heavenly body turning on its axis
Sidereal
Determined by or from the stars
Day
A division of time equalled to 24 hours
Solar Day
A division of time equal to the tim elasped between two consectutive returns of the same terrestial meridian to the sun
Year
A division of time equal to 12 lunar months
