If the energy or matter can't be created nor destroyed,does

  • #1
59
0

Main Question or Discussion Point

If the energy or matter can't be created nor destroyed but can only be converted from one form to another, does it mean everything including us, used to be stardust or chemicals or whatever that existed right after the big bang?

Is everything that we use now, are made from the stuff that existed in the universe, right after the big bang? not even a single new atom was created after the big bang?


Thanks.!
 

Answers and Replies

  • #2
Borg
Science Advisor
Gold Member
1,871
2,223
Yes and no. The main atoms that existed after the big bang were Hydrogen and Helium. These are the primary fuel for stars. All stars use fusion as their power source and one of the byproducts is heavier atoms - atoms that have been 'fused' together to create larger atoms. Stars above a certain size (about 8 times the size of our sun) will eventually explode in a supernova which ejects large amounts of the fusion products like carbon, oxygen, iron, etc. that are part of your body (the hydrogen in your body doesn't have to come from a supernova). This process of stars creating new atoms and the massive ones exploding still continues today.
 
  • #3
Drakkith
Staff Emeritus
Science Advisor
20,717
4,423
We are all star stuff. ;)
 

Related Threads for: If the energy or matter can't be created nor destroyed,does

  • Last Post
Replies
3
Views
2K
Replies
21
Views
105K
Replies
1
Views
1K
Replies
29
Views
17K
Replies
4
Views
5K
  • Last Post
Replies
6
Views
2K
Replies
4
Views
2K
Replies
36
Views
4K
Top