3 ms·
Our sun is about 4.6B year old. There were a few other generations of stars that lived and died before our sun came about, and these spewed out the heavier elem
by AllegedAlec 6y ago
Our sun is about 4.6B year old. There were a few other generations of stars that lived and died before our sun came about, and these spewed out the heavier elements that make up our solar system.
- Tepix 6y agoIt must have been a somewhat dull first generation of stars and planets with only Hydrogen and Helium around. On the other hand, giant stars explode after just a few million years so it didn't take long for other elements to appear.
- dredmorbius 6y agoThe ratio of heavier elements to H & He is called metallicity, and it is a measurable characteristic of stars, which are classed into Type I (high metallicity) and Type II (low) populations. Low-metallicity Type II stars are generally older. Nothing specific on what Type II stellar systems and planets would be like, though I'd suspect gas giants, generally. https://en.wikipedia.org/wiki/Metallicity https://en.wikipedia.org/wiki/Metallicity
- saagarjha 6y agoI think they make up for their dullness by being absolutely massive–hundreds of solar masses, if not more.