Universe | Beyond the Big Bang
Δημοσιεύτηκε στις 10 Αυγ 2017
The
Big Bang theory is the prevailing cosmological model for the universe
from the earliest known periods through its subsequent large-scale
evolution. The model describes how the universe expanded from a very
high density and high-temperature state and offers a comprehensive
explanation for a broad range of phenomena, including the abundance of
light elements, the cosmic microwave background (CMB), large scale
structure and Hubble's Law. If the known laws of physics are
extrapolated to the highest density regime, the result is a singularity
which is typically associated with the Big Bang. Detailed measurements
of the expansion rate of the universe place this moment at approximately
13.8 billion years ago, which is thus considered the age of the
universe. After the initial expansion, the universe cooled sufficiently
to allow the formation of subatomic particles and later simple atoms.
Giant clouds of these primordial elements later coalesced through
gravity in halos of dark matter, eventually forming the stars and
galaxies visible today.
Big Bang theory is the prevailing cosmological model for the universe
from the earliest known periods through its subsequent large-scale
evolution. The model describes how the universe expanded from a very
high density and high-temperature state and offers a comprehensive
explanation for a broad range of phenomena, including the abundance of
light elements, the cosmic microwave background (CMB), large scale
structure and Hubble's Law. If the known laws of physics are
extrapolated to the highest density regime, the result is a singularity
which is typically associated with the Big Bang. Detailed measurements
of the expansion rate of the universe place this moment at approximately
13.8 billion years ago, which is thus considered the age of the
universe. After the initial expansion, the universe cooled sufficiently
to allow the formation of subatomic particles and later simple atoms.
Giant clouds of these primordial elements later coalesced through
gravity in halos of dark matter, eventually forming the stars and
galaxies visible today.
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