The MOST accurate stellar parallax measurements for distances to the majority of stars in Earth's neighborhood in the universe have been made by
A) the Hubble Space Telescope.
B) Friedrich Wilhelm Bessel, in 1838; no measurements since then have matched the precision of his measurements.
C) the Gaia satellite.
D) the Very Long Baseline Array of radio telescopes.

Question

Quizplus · Accepted Answer

The Gaia satellite, launched by the European Space Agency, is specifically designed for astrometry, which includes measuring the positions, distances, and motions of stars with unprecedented precision. It has significantly improved our understanding of stellar positions and distances over any previous methods or instruments.

The MOST Accurate Stellar Parallax Measurements for Distances to the Majority