So far, the most accepted theory of the beginnings of the universe is the "big bang theory". if the big bang were true, then it means that everything in the universe began or started all at the same time.... then how is it that some stars are older than others, plus the supernova and black holes?
2006-12-11 10:19:48 · 5 answers · asked by beruto 2 in Science & Mathematics ➔ Astronomy & Space
Evidence of Black holes has been available for some time now.
Stars have different lifetimes. If you started with 100 stars of different masses, ranging from 8% the mass of the sun to 60 times the mass of the sun, you would find that the bigger stars would burn out quickly and die, leaving the smaller stars behind. Then, over time, the material blasted away from your sample that already died would form more stars, which would be much younger than the smaller stars that are still chugging away making helium from hydrogen.
Imagine this with Billions of stars and you can see that you shouldn't expect stars to be the same age, unless they all formed at the same time (and likely in the same place).
Supernovae are the deaths of those bigger stars. They explode when they run out of fuel, and depending on how big they were, they might leave behind a very massive core that has so much mass that is collapses under it's own gravity to form a black hole.
2006-12-11 10:52:15 · answer #1 · answered by ~XenoFluX 3 · 1⤊ 0⤋
The big bang didn't just explode and produce stars, planets, galaxies, etc. The expansion of space was an expansion of the basic pieces of matter, which cooled and formed atoms, then accreted into stars and so forth. Everything formed at different rates, and new stars are forming all the time. Look up 'cosmochemical evolution'.
2006-12-11 18:48:05 · answer #2 · answered by eri 7 · 1⤊ 0⤋
the key word in what you said was "started". I guess you could think of it like babies. If all people were created at the same time, like in the big bang theory, what about babies? they are born all the time. I guess the same goes for stars. They are created all the time.
2006-12-11 18:28:14 · answer #3 · answered by Anonymous · 0⤊ 2⤋
Because stars are being created all the time.
2006-12-11 18:23:14 · answer #4 · answered by langdonrjones 4 · 0⤊ 0⤋
They may all started at the same time but they don't all grow or whatever at the same rate. The suns are all individual . the black hole u still don't see it but what it is pulling in. U worried??
2006-12-11 19:59:22 · answer #5 · answered by JOHNNIE B 7 · 0⤊ 1⤋