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Open University
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Taking a Galactic Census
This animated clip introduces the Gaia spacecraft, which will take measurements of one billion stars in the Milky Way. Using two optical telescopes the Gaia spacecraft will use parallax to measure their position, it will measure their Doppler shift, and by measuring the bending of starlight from the Sun’s gravitational field it will be able to test Einstein’s Theory of General Relativity.
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