#dogwalk #edinburgh

Today's "Essential 10" episodes of In Our time was: Gravitational Waves.

"The rather un-poetically named star SN 2006gy is roughly 150 times the size of our sun. Last week it went supernova, creating the brightest stellar explosion ever recorded." From 2007.

A very clear explanation of the theory and the experiments used, including two 6kg blocks of glass.

Followed by a discussion about funding for an experiment in space. And a cracking Scottish accent.

The sky was blue and lots of different clouds, and it brought out the greens and browns. It seems like it is always damp.