From Year 0 (BCE/CE): -4600000000
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Birth of the Sun

Epic sun surface flare prominence solar system
Epic sun surface flare prominence solar system

Birth of the Sun

4.6 billion years ago, a cloud of gas and dust collapsed under the force of its own gravity to form our solar system.With the Sun at its center, glowing, the planets had not yet formed. The Sun, a G-type Population 1 star, shines brightly with a surface temperature of about 9,400 degrees, 5,500 Kelvin, and a lifespan of about 10 billion years.

Big History Thresholds: 1=Big Bang | 2=Stars&Galaxies | 3=Chemicals | 4=Solar System | 5=First Life | 6=TI | 7=Agrarian | 8=Science

Formation of Solar System and Earth: The 4th threshold is the forging of our Solar System.

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WWB Season 7 — Returning 2026!

I’m taking this time to catch up with the paired videos for recent WWB editions, and to restructure the WWB into seasions of 8 weeks: 40 tidbits consisting of 32 1-Minute Hot Topics and 8 quotes. Each week featureing a tidbit in philosophy, science, critical, thinking, and history as well as a weekly quote. Follow the TST YouTube channel to catch all new videos. –Mike

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Reading Material: 
Videos: 
Weekly Wisdom Builder 
Season 6: Cognition & Ideas
Jan 1 – Feb 26
October 15, 2025 Edition
February 26, 2025 Edition
Quote of the Week
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Wisdom emerges from the consistent exploration of the intersections of philosophy, science, critical thinking, and history.

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30 Philosophers: A New Look at Timeless Ideas

by Michael Alan Prestwood
The story of the history of our best ideas!
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