Final answer:
Gaia, a space observatory launched in 2013, revolutionized star observations by enhancing accuracy and visibility, leading to advancements in mapping celestial bodies.
Explanation:
Gaia, a satellite launched by the European Space Agency in 2013, has made significant contributions through its observations. One major accomplishment is its ability to observe fainter stars and measure their positions with 200 times more accuracy than previous satellites like Hipparcos. Gaia's mission aims to create an accurate three-dimensional map of 1 billion stars within 30,000 light-years of the Galaxy by measuring their positions and parallaxes.
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