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I find it wild that we’ve been using triangular reckoning (parallax) for over a millennium, all the way back to early mariners. Measure two angles, draw a trian
by TMEHpodcast 2y ago
I find it wild that we’ve been using triangular reckoning (parallax) for over a millennium, all the way back to early mariners. Measure two angles, draw a triangle, know where you are. That same method now maps galaxies. We’re still navigating the unknown with geometry.
- dreamcompiler 2y agoPretty 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...