Astronomy in transit
Oct 08, 2020
3 minutes
by David Ellyard
November is a month to celebrate those relatively rare celestial events known as ‘transits,’ the passage of Mercury or Venus across the face of the Sun as viewed from Earth. During a transit, the planet in question looks like a tiny black dot, slowly crawling across the solar disk.
Transits were conceivable under the old ‘geocentric’ model of the Solar System, which had the Sun, the planets and the
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