Old space information, relevant conclusions?

In summary, the age of the information we see in space and the fact that the universe appears to be expanding does not necessarily mean it is still expanding. However, based on the evidence and the smooth scaling of the Hubble constant over the history of the universe, it is highly unlikely that expansion suddenly halted in the recent past.
  • #1
Xeeg
1
0
If the information we see in space is very old, and the universe "seems" to be expanding, how can we know that it is still expanding?
 
Astronomy news on Phys.org
  • #2
If it had stopped anytime in the recent past we probably wouldn't know about it. We just have no reason to believe it would suddenly stop doing what it's been doing for 13 billion years. Kind of like gravity. We don't know if gravity is going to turn off tomorrow, but we have absolutely no reason to even consider that it might.
 
  • #3
Yes, but, the information becomes less ancient as distance decreases. The expansion rate of the universe is deduced as a function of time. The Hubble constant scales smoothly across the history of the universe. That does not prove expansion did not suddenly halt a handful of millions of years ago, but, is viewed as highly unlikely.
 

1. What is old space information?

Old space information refers to data and knowledge about the universe that was collected and studied in the past. This can include information from old space missions, observations made by previous generations of scientists, and theories and models that have been developed over time.

2. Why is old space information important?

Old space information is important because it provides a foundation for our current understanding of the universe. By studying this information, scientists can build upon previous knowledge and make new discoveries. It also allows us to track changes and patterns in the universe over time.

3. How is old space information relevant to current space exploration?

Old space information is relevant to current space exploration because it can help inform future missions and research. By analyzing data and conclusions from past space missions, scientists can better understand the challenges and potential discoveries of new missions. Old space information can also be used to identify areas for further exploration and study.

4. What are some potential conclusions that can be drawn from old space information?

Some potential conclusions that can be drawn from old space information include the age and evolution of the universe, the formation of galaxies and planets, and the existence of other celestial bodies and phenomena. Old space information can also provide insights into the laws of physics and the behavior of matter and energy in space.

5. How does the study of old space information contribute to our understanding of the universe?

The study of old space information contributes to our understanding of the universe by providing evidence and data that can support or challenge existing theories and models. It also allows scientists to make connections between seemingly unrelated phenomena and to develop new hypotheses and research areas. Overall, old space information helps us to gain a deeper understanding of the vast and complex universe we live in.

Similar threads

  • Astronomy and Astrophysics
Replies
2
Views
837
  • Astronomy and Astrophysics
Replies
3
Views
682
  • Astronomy and Astrophysics
Replies
12
Views
1K
  • Astronomy and Astrophysics
Replies
10
Views
1K
  • Astronomy and Astrophysics
Replies
13
Views
1K
  • Astronomy and Astrophysics
Replies
25
Views
2K
  • Astronomy and Astrophysics
2
Replies
49
Views
7K
  • Astronomy and Astrophysics
Replies
11
Views
1K
  • Astronomy and Astrophysics
Replies
24
Views
3K
Replies
22
Views
1K
Back
Top