Now wait a second here. If nothing can go faster than light, then how did those neutrinos get here before the light did?
They took the express lane.
Pulses of neutrinos released before the “explosion” Just a guess I don’t know what kind of convulsions a collapsing star goes through. The electromagnetic spectrum is much more than visible light.
Along with the last light from before the star exploded.
Because they proceeded directly from the core at the moment of collapse, without getting absorbed or scattered by the outer layers of the star, without passing Go!, and without collecting $200. But photons are heavily scattered inside the star, and the expanding shock wave of pressure itself travels much slower than the speed of light, and has to reach the surface of the star before one sees it. (By which time the neutrinos are long gone.)
If you put a blasting cap inside the middle of a large sphere of explosive, you won’t see it the moment the cap goes off, but only when the shock makes it to the outside surface. But, supposing that blasting caps also made neutrinos (they don’t), the neutrinos would leave at the speed of light, and you’d see those first.
The neutrinos are emitted right when the nuclear reactions go out of control in the core. The rest of the star is transparent to neutrinos so they escape immediately.
The light has to propagate through the mass of the body, most of which is opaque so it aborbs light and then reemits it. That takes time. In the sun I've seen estimates of thousands to millions of years for a photon to get from the core to the surface. During a supernova it takes less time because the driving force is the explosion's compression wave destroying the star which can take hours.
They were blasted out before the light. They travel pretty fast as well.
That’s how they roll.
One would assume that the neutrino burst happend before...