Pretty amazing. "Gaia is measuring their positions to an accuracy of 24 microarcseconds. This is comparable to measuring the diameter of a human hair at a dist

Pretty amazing. "Gaia is measuring their positions to an accuracy of 24 microarcseconds. This is comparable to measuring the diameter of a human hair at a distance of 1000 km." https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_overview https://www.esa.int/Science_Exploration/Space_Science/Gaia/G...