a new #AstroPhysicsFactlet with quite some range:
Astronomers (not like me, real hardcore astronomers!) collect photons to observe the Universe and study its properties in space and time.
How large is the range of wavelengths of the photons they use for this?
This explains the radically different techniques used by observational astronomers to extract informations from telescopes in these very different energy ranges.
At the end of the story all are maps and spectra and such, but the pipelines and art of reducing raw data from these opposite side of the EM spectrum are astonishgly different.
@franco_vazza
Some species have root networks that can be on the order of a kilometre think, the sort of thing that happens when a species can just grow new bits indefinitely
@tobychev
Cool! then, the "biological range of beasts" will be more about ~1e12, still tiny compared to the ~1e21 range of photons!