For reasons unknown, I'd had the song Cosmic Dancer stuck in my head all day. It's not exactly a radio staple, and it was more than 30 years old by then, but nevertheless there it was.
Later that day, Heinrich came by and we went for a walk. Suddenly he burst out singing Cosmic Dancer - and what's more it was the exact line that had kept running through my mind. I asked him about it and he said "oh, I was listening to that album this morning. Isn't it great?"
It was just a small thing, but a coincidence so vanishingly unlikely that it reminds me that such things may truly be cosmic after all.
image credit: NASA