Date: 15/11/2020 05:45:22
From: Tau.Neutrino
ID: 1649568
Subject: Solar system formed in less than 200,000 years

Solar system formed in less than 200,000 years

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

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Date: 15/11/2020 11:12:49
From: dv
ID: 1649648
Subject: re: Solar system formed in less than 200,000 years

Tau.Neutrino said:


Solar system formed in less than 200,000 years

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

more…

Huh

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Date: 15/11/2020 11:16:24
From: The Rev Dodgson
ID: 1649650
Subject: re: Solar system formed in less than 200,000 years

dv said:


Tau.Neutrino said:

Solar system formed in less than 200,000 years

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

more…

Huh

You sound unimpressed.

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Date: 15/11/2020 11:20:05
From: dv
ID: 1649651
Subject: re: Solar system formed in less than 200,000 years

The Rev Dodgson said:


dv said:

Tau.Neutrino said:

Solar system formed in less than 200,000 years

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

more…

Huh

You sound unimpressed.

Nah that was an impressed huh. That’s fast.

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Date: 15/11/2020 11:20:46
From: roughbarked
ID: 1649652
Subject: re: Solar system formed in less than 200,000 years

The Rev Dodgson said:


dv said:

Tau.Neutrino said:

Solar system formed in less than 200,000 years

A long time ago—roughly 4.5 billion years—our sun and solar system formed over the short time span of 200,000 years. That is the conclusion of a group of Lawrence Livermore National Laboratory (LLNL) scientists after looking at isotopes of the element molybdenum found on meteorites.

more…

Huh

You sound unimpressed.

dv isn’t easily impressed.

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Date: 15/11/2020 11:21:08
From: roughbarked
ID: 1649653
Subject: re: Solar system formed in less than 200,000 years

dv said:


The Rev Dodgson said:

dv said:

Huh

You sound unimpressed.

Nah that was an impressed huh. That’s fast.

oic.

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Date: 15/11/2020 11:21:27
From: The Rev Dodgson
ID: 1649654
Subject: re: Solar system formed in less than 200,000 years

dv said:


The Rev Dodgson said:

dv said:

Huh

You sound unimpressed.

Nah that was an impressed huh. That’s fast.

OK,

I should read more carefully.

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Date: 19/11/2020 21:11:16
From: mollwollfumble
ID: 1652143
Subject: re: Solar system formed in less than 200,000 years

That’s about right. Definitely a lot less than a million years. It’s really startling how fast things happened in the early solar system.

The half life of 26Al is 72,000 years. And all the main asteroids (Vesta, Ceres, Psyche etc.) formed while it was still strongly radioactive.

Closer in to the Sun, things happened still faster.

That’s relative date. Absolute date is inaccurate by a larger amount than that. But even there, the absolute date of calcium aluminate inclusions (CAIs) in asteroids and meteorites is known to within +-160,000 years.

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