Astronomy Quiz
18 questions · no time limit
0:00
GRAVITY, MOTION & LIGHT
Question 1 of 18
No time limit
Current
Answered
Flagged
Not seen
In a double-lined spectroscopic binary, the spectral lines from two different stars are visible. Over time, these lines are seen to split, merge, and split again. When the spectral lines are observed to be maximally separated, with one set showing maximum blueshift and the other showing maximum redshift, what can be inferred about the stars' positions in their orbits?
YOUR PROGRESS
18
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCD
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end