Which of the following statements about stellar parallax is true?
A)We observe all stars to exhibit at least a slight amount of parallax.
B)Stellar parallax was first observed by ancient Greek astronomers.
C)The amount of parallax we see depends on how fast a star is moving relative to us.
D)It takes at least 10 years of observation to measure a star's parallax.
E)The closer a star is to us,the more parallax it exhibits.

Question

Quizplus · Accepted Answer

The closer a star is to us, the larger the angle of parallax it exhibits. Therefore, option E is the correct statement. Option A is incorrect as some stars may be too far away to exhibit measurable parallax. Option B is incorrect as stellar parallax was first observed by Friedrich Bessel in 1838. Option C is incorrect as the amount of parallax depends on the distance to the star, not its speed. Option D is incorrect as stars with larger parallax angles can be measured in shorter time intervals, but some stars may still require more than 10 years of observation.

Which of the Following Statements About Stellar Parallax Is True