Astronomy Flashcards
What is a Plantesimal ?
Is a small body that is clumped together
What does constellation mean ?
stars in the sky that form an pattern
What is a Nebular ?
instellar gas and dust
What a parsec ?
large distance
What is light year ?
light traveled in one year
What is an astonomical unit ?
distance between earth and sun
What is a solar day ?
24-hour midnight to midnight
What a year ?
earth rotating aroung the sun
What does rotation do ?
a turn around on the axis
What is an orbit ?
a curved path
what is a comet ?
celestial body moving about the sun
gas giant planets ?
gases surrounded by a rocky core
what is a period ?
a large amount of time
what a asteroid ?
diameter that revolve about the sun in orbits lying mostly between those of Mars and Jupiter.
Cosmologist ?
dealing with universe
What do a nuclear fusion do ?
stars that generate energy
what are terrestrial planets ?
planets that have the same characteristics and the closest to the sun
what is a protaplanetary ?
A material formed by an eark stage for the solar system formation
what an angular velocity ?
angular position of a rotating body
how would you revolve ?
to move in a circular or curving course
what is a sideral day ?
interval between two successive passages
