Age of the Universe vs Age of the Stars

In summary, the conversation discussed the possibility of our universe being inside an already existing universe and that being the reason for its expansion. However, this theory is not supported by scientific evidence and is merely speculation. The age of objects in the universe is still being studied by astronomers and cosmologists, and news articles should not be considered as valid sources of scientific information. The conversation also mentioned a recent article about a star appearing older than the universe, causing confusion among experts. In general, news items do not qualify as science and should be treated with caution. Finally, the conversation ended with the mention of the OP's intention to delete their membership due to unspecified reasons, which was not appreciated by the community.
  • #1
Benfield
8
1
TL;DR Summary
Universe within universe
Recently a news article stated objects found in the universe have different ages, could it be that our universe is inside an already existing universe and that is why it is able to expand so easily.
 
Space news on Phys.org
  • #2
Benfield said:
Summary: Universe within universe

Recently a news article stated objects found in the universe have different ages, could it be that our universe is inside an already existing universe and that is why it is able to expand so easily.
It's difficult to make any sense of that. In general news items don't qualify as science.
 
  • #3
He is probably speculating about a bubble universe. We have no way of testing this theory as far as I know and this forum is only about accepted knowledge.
 
  • #4
I have a different age than you - but that doesn't imply anything about cosmology.

We know the expansion is not a motion of objects through space because that wouldn't fit to observations. No, we are not expanding inside an "outer universe", there is no such thing.
 
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  • #5
There was a recent article about the age of the Methusalah star that appears to be older than the universe causing some consternation among cosmologists.

https://www.forbes.com/sites/starts...-appear-older-than-the-universe/#63bc38323c44
Before we can even begin speculate about your question we need to have really good numbers for the age of things in the universe and that is the ongoing work of astronomers and cosmologists today.

https://www.skyandtelescope.com/astronomy-resources/age-of-the-universe/
 
  • #6
PeroK said:
It's difficult to make any sense of that. In general news items don't qualify as science.
Thank you I shall delete my membership always a pleasure.
 
  • #7
mfb said:
I have a different age than you - but that doesn't imply anything about cosmology.

We know the expansion is not a motion of objects through space because that wouldn't fit to observations. No, we are not expanding inside an "outer universe", there is no such thing.
Thanks awfully account is being deleted to make room for the iluminati
 
  • #8
PeroK said:
In general news items don't qualify as science.

Particularly when there's not a single reference to an actual scientific paper in the entire article.
 
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  • #9
Benfield said:
Thank you I shall delete my membership always a pleasure.
Benfield said:
Thanks awfully account is being deleted to make room for the iluminati
We don't appreciate trolls here at the PF. Bye.
 
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Related to Age of the Universe vs Age of the Stars

1. What is the difference between the age of the universe and the age of stars?

The age of the universe refers to the amount of time that has passed since the Big Bang, which is estimated to be around 13.8 billion years. On the other hand, the age of stars refers to the amount of time that a particular star has been burning since its formation. This can vary greatly depending on the type of star, but can range from millions to billions of years.

2. How do scientists determine the age of the universe?

Scientists use a variety of methods to estimate the age of the universe, including studying the expansion rate of the universe, the cosmic microwave background radiation, and the abundance of certain elements in the universe. These methods all point to an age of around 13.8 billion years.

3. How do scientists determine the age of stars?

The age of stars can be determined through various methods, including studying their brightness, temperature, and composition. By comparing these characteristics to models of stellar evolution, scientists can estimate the age of a star.

4. Are there any stars that are older than the universe?

No, it is not possible for a star to be older than the universe. The universe began with the Big Bang and all stars formed after this event. However, there are stars that are close to the age of the universe, such as the oldest known star, which is estimated to be around 13.5 billion years old.

5. How does the age of the universe affect the age of stars?

The age of the universe does not directly affect the age of stars. However, the age of the universe does play a role in the formation and evolution of stars. As the universe ages, the amount of gas and dust available for star formation decreases, leading to fewer new stars being formed. Therefore, the age of the universe can indirectly impact the age of stars by affecting the rate at which new stars are formed.

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