Did Gravity Remain Constant Since the Time of Dinosaurs?

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Discussion Overview

The discussion revolves around the question of whether gravity has remained constant since the time of dinosaurs, exploring the potential for measuring historical gravitational values and the implications of such measurements. Participants consider both theoretical and observational aspects related to gravity and its constancy over time.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants question how we can know that gravity has not changed significantly over time and suggest that measuring the gravitational constant in space could provide insights.
  • Others argue that for gravity to change, there would need to be a change in the mass of the Earth, which they claim lacks evidence outside of specific theories like moon formation.
  • There is a proposal to verify or measure gravity from the past by observing space objects, as these observations reflect conditions from earlier times.
  • Participants discuss the application of current theories, such as gravitational equations, to support their views on the constancy of gravity.
  • One participant expresses difficulty finding information on calculations of the gravitational constant based on space objects, indicating a gap in available resources.

Areas of Agreement / Disagreement

Participants generally agree that current observations support the idea that the gravitational constant has not changed significantly. However, there is no consensus on how to measure or verify gravity from the past, and multiple competing views remain regarding the implications of such measurements.

Contextual Notes

Some limitations include the lack of definitive methods for measuring historical gravity and the dependence on current theoretical frameworks to interpret observations of space objects.

SharpSolaris
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How do we know that gravity did not change very much? We have the such facts?
For example - can we measure the gravitational constant in space? Use double stars, in millions of light years, etc.
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Sorry my English is bad.
 
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For gravity to change, you would need a change in the mass of the earth. There is no evidence such a thing happened (outside of moon formation theories).

Current observations all agree with the gravitational constant.

No, gravity did not "crush the dinosaurs".
 
I agree. But can we verify or "measure" the gravity of the past?
For example - what say about this observation of space objects? After all, we see space objects as they were in the past.
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Can we see the gravitational constant, a binary pulsar or binary star?

g=Fr2/(m1 m2)?
 
Last edited:
SharpSolaris said:
I agree. But can we verify or "measure" the gravity of the past?
For example - what say about this observation of space objects? After all, we see space objects as they were in the past.
---
Can we see the gravitational constant, a binary pulsar or binary star?

g=Fr2/(m1 m2)?

We observe objects in space, we apply our current theories (such as the equation you show) and if it fits, it supports the theory.
 
I'm looking in all languages, ​​and cannot find any information on this.
Someone was relied in calculations the gravitational constant, based on space objects? Someone was do checking is the gravitational constant based on space objects?
Maybe you know?
 
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