3 ms·
> A Star Went Supernova in 1987 It didn't go supernova in 1987. It happened around 168,000 years before that, but it took the light from the event that long to
by johnr2 6y ago
> A Star Went Supernova in 1987
It didn't go supernova in 1987. It happened around 168,000 years before that, but it took the light from the event that long to reach us. A better title might be "A supernova was observed in 1987".
- perl4ever 6y agoI find this particular pedantry annoying ever since I came across the idea that anything on our light cone is "now". I have a philosophical distaste for defining reality as something we can never experience - the condition of anything at a distance.