The most distant stars we can measure stellar parallax for are approximately

Question

Quizplus · Accepted Answer

Stellar parallax is the apparent shift in the position of a star due to the Earth's orbit around the Sun. This effect is used to measure the distance to nearby stars within our Milky Way Galaxy. The precision of the measurement depends on the size of the baseline, which is the distance between the Earth at two different times of the year. The maximum baseline we can achieve on Earth is approximately 300 million km, which corresponds to a maximum distance of about 100 parsecs (~ 330 light-years). Therefore, choice B is correct as the most distant stars we can measure stellar parallax for are about 100 parsecs away. The other choices are incorrect as they are much farther away than what we can measure with parallax.

The Most Distant Stars We Can Measure Stellar Parallax for Are