Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
High School Electives
/
Astronomy
/
Observable-Universe Limits and Model Uncertainty
Grade Level
Astronomy
AST.255 Observable-Universe Limits and Model Uncertainty
0%
Skill Level
🟢 Easy
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
In astronomy, the entire universe means all of space and everything in it. What makes the observable universe different?
A
It is the same size as the constellation patterns named by ancient cultures, and includes only familiar named star patterns.
B
It contains only objects that can be seen without a telescope.
C
It is limited by the height of Earth's atmosphere.
D
It is limited by the distance information-carrying signals have been able to travel to us since the early universe.
Submit Answer
