The top ten ephemeral moments in the sky

As part of the build-up to next week’s Mercury transit, I’ve put together a list for Sky & Telescope on the top ten fleeting phenomena in astronomy… https://www.skyandtelescope.com/observing/top-ten-ephemeral-moments-sky/ At Number 10: An Overhead Pass of the International Space Station. Image: Bob King. Coming soon: there will be a lovely ‘ephemeral moment’ at the end ofContinue reading “The top ten ephemeral moments in the sky”