Last Updated：2022/12/24
An international group of researchers has developed a new way to measure accurately the extragalactic background light (EBL) that fills the universe. The technique involves measuring the attenuation of high-energy gamma rays from distant blazars and it could improve our understanding of how galaxies form and evolve, as well as how the universe has expanded since the Big Bang
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An
international
group
of
researchers
has
developed
a
new
way
to
measure
accurately
the
extragalactic
background
light
(EBL)
that
fills
the
universe.
The
technique
involves
measuring
the
attenuation
of
high-energy
gamma
rays
from
distant
blazars
and
it
could
improve
our
understanding
of
how
galaxies
form
and
evolve,
as
well
as
how
the
universe
has
expanded
since
the
Big
Bang
