Well let’s not forget Einstein said time is relative and time dilation can be affected by the strength of gravitational fields. Astrophysics may not be the settled science you think it is - all science is subject to new discoveries and experiments. For instance did the little neutrino exceed the speed of light as the last experiment seemed to indicate in Switzerland?
quik quiz: what is the mass of a neutrino?
And how do they catch them as they pass through the earth?