Solar System Flashcards
0
Q
Astronomical unit
A
The distance from the center of the earth to the center of the sun.
1
Q
Solar system
A
a star and all the objects that travel in orbit around it
2
Q
Planet
A
a celestial body moving in an elliptical orbit around a star.
3
Q
Dwarf planet
A
a celestial body resembling a small planet but lacking certain propertias to make it a normal planet
4
Q
Asteroid
A
a small rocky body orbiting the sun
5
Q
Comet
A
a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
6
Q
Planetesimal
A
an object formed from dust, rock, and other materials
