How long has the universe existed?

Related questions

1. Why is evolution important?
2. Who proposed the theory of evolution?
3. What is the primary driver of evolution?
4. What exactly is evolution?
5. What is Darwin's theory of evolution called?
6. When did humans leave Africa?
7. How does gene flow work?
8. What was the mark God put on Cain?
9. What evolved into humans?
10. What are the 5 evidences of evolution?

Tags

1. #according
2. #billion
3. #around
4. #place
5. #earliest
6. #universe
7. #chronology
8. #taking
9. #level
10. #uncertainty
11. #future
12. #estimated
13. #cosmology
14. #million
15. #confidence
16. #existence
17. #describes
18. #years
19. #history
20. #stages