Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
High School Electives
/
Astronomy
/
The Celestial Sphere Model
Grade Level
Astronomy
AST.031 The Celestial Sphere Model
0%
Skill Level
🟢 Easy
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
During one night, many constellation patterns keep nearly the same shapes as they move across the sky. How does the celestial sphere model explain this useful approximation?
A
All stars physically move together on a rigid glass shell around Earth.
B
The stars can be treated as fixed directions on the sphere over short observing times.
C
Earth stops rotating whenever a constellation is above the horizon.
D
The distances between stars become equal while they are visible at night (in this context).
Submit Answer
