Jonathan Silverlight wrote:

I'm in a nit-picking mood :-) so I'll note that should presumably
photons, not just light.
But there's also neutrinos, though we don't yet have the ability to
detect them at cosmological distances.

I'm not sure what you mean in this context by cosmological distances.
We captured neutrino's from another (nearby galaxy) in 1987. Some of
the SN 1987A Neutrino Burst and Visible Explosion Data:

11 Anti-Neutrinos detected in the Kamiokande II Detector, Feb 23, 1987
7h 35m 35s UTC (± 1 min) (Start)

8 Anti-Neutrinos detected in the Irvine-Michigan-Brookhaven (IMB)
Detector, Feb 23, 1987 7h 35m 41.37s UT (± 10 ms) (Start)

Optical Discovery: V = 5.0 mag 0n 24.122 Feb 1987...
Ref: Lang, Astrophysical Formulae Vol I, 3rd ed, pg 403 (1998)