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With a value for around 69 km/s/Mpc, the Hubble time evaluates to / = 14.5 billion years. [17] To get a more accurate number, the correction function must be computed. In general this must be done numerically, and the results for a range of cosmological parameter values are shown in the figure.
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. There is 1 pending revision awaiting review. Scientific projections regarding the far future Several terms redirect here. For other uses, see List of numbers and List of years. Artist's concept of the Earth 5–7.5 billion years from now, when the Sun has become a red giant While the ...
The Big Bang event 13-14 billion years ago initiated the universe, and it has been expanding ever since. Scientists in 1998 disclosed that this expansion was actually accelerating, with dark ...
The universe has appeared much the same as it does now, for many billions of years. It will continue to look similar for many more billions of years into the future. The galactic disk of the Milky Way is estimated to have been formed 8.8 ± 1.7 billion years ago but only the age of the Sun, 4.567 billion years, is known precisely. [82]
2.6 billion years (11 Gya): first stars in the thick disk region of the Milky Way are formed. [11] 4 billion years (10 Gya): Gaia Enceladus merges into Milky Way. [11] 5 or 6 billion years, (8 or 9 Gya): first stars in the thin disk region of the Milky Way are formed. [11]
An age of 12.0 ± 0.5 billion years was estimated in 2022 using evolutionary models and interferometric observations, [5] while a more detailed study in 2024 found an age between 12 and 14 billion years, depending on the chemical abundances used. [8]
It has a half life of 14.05 billion years, which makes it the longest-lived isotope of thorium. It decays by alpha decay to radium-228; its decay chain terminates at stable lead-208. Thorium-232 is a fertile material; it can capture a neutron to form thorium-233, which subsequently undergoes two successive beta decays to uranium-233, which is ...
XRP and Solana exchange-traded products, or ETPs, could attract as much as $14 billion in investment within their first year, banking giant JPMorgan says, suggesting huge demand for them if the ...