Space Flashcards
1
Q
Km to Ly
A
9.46×10¹²
2
Q
Km to AU
A
1.5×10⁸
3
Q
Solar System
A
Sun
Mercury
Venus
Earth
Mars
Asteroid belt
Jupiter
Saturn
Uranus
Neptune
Pluto
Kuiper Belt
4
Q
How many solar systems are in our galaxy
A
500+
5
Q
How old is our solar system
A
4.5 billion years
6
Q
Solar nebula
A
Cloud of interstellar gas and dust, forming the solar system
7
Q
Terrestrial planets
A
•Primarily rocky
•Hard surface
•No ring system
•Few/no moons
8
Q
Jovian planets
A
•Gas/Ice giants
•Ring system
•Many moons
•No solid surface
9
Q
Planet w/shortest orbit
A
Mercury
10
Q
Hottest planet
A
Venus (CO2, lava)
11
Q
Primary gas in gas giants
A
H, He
12
Q
Coldest planet
A
Neptune
13
Q
Kuiper belt
A
Home to Dwarf planets
Birth place of comets
14
Q
Oort Cloud
A
Collection of icy debris
Edge of the solar system where gravitational pull of the sun ends
