EpiStack

O-35 - Earth and Sun have existed for about 4.5 billion years and the Sun has about 5 billion years remaining

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Properties8
type
observation
id
O-35
statement
The Earth and the Sun have existed, continuously and without destruction, for ~4.5 billion years, and the Sun's natural remaining lifetime — the horizon beyond which Earth is sterilized regardless of any black-hole scenario — is about 5 billion years.
generally_known
true
source
S-37 - Giddings & Mangano 2008 — Astrophysical implications of hypothetical stable TeV-scale black holes
locator
§2.2; §9
data_basis
—
link_state
linked

Firmly established, uncontested background fact used as the survival baseline in the cosmic-ray safety arguments (“the multi-billion year longevity of Earth and Sun”) and as the natural-timescale yardstick that accretion times are compared against.

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added after the FLF submission deadline

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