Is Archaeology Always About Digging Down and Does it Imply Earth's Expansion?

[Just a though]

Finding out about the past (archaeology) always involves digging down?
Does this mean that the planet we live on is actually expanding?
If you think about the programs on the TV!
E.G. Time team, they are always digging down to find our (the planets) past.
Now considering the above,
Can we explain all this extra matter being added to are planet by cosmic dust?
If so what was the circumference/radius of our planet when the evident meteor impact destroyed the Dinosaurs?
Also at the time would it not be logical that the gravity holding the atmosphere to our planet would favour the heavy gasses?
E.G. Oxygen!? Resulting in a thin layer of gas that our ancestors the mammals could take advantage of?
Just a Thought.

 

[Vanadium 50]

There is no evidence for an expanding earth. Unfortunately, it is a subject that seems to attract kooks and crackpots. So I would pay it no mind.

 

[Huyen401]

It is a common misconception that archaeology always involves digging down. While excavation is a key aspect of archaeological research, it is not the only method used. Many archaeological sites can also be studied through surface surveys, remote sensing techniques, and historical research. Additionally, the digging done by archaeologists is typically not very deep, as most human activity and artifacts are found within the top few meters of soil.

As for the idea that the planet is expanding, this is not supported by scientific evidence. The Earth's size and shape have been well-established through various measurements and observations. The programs on TV, such as Time Team, may focus on excavation because it makes for more visually interesting television, but it is not representative of all archaeological research.

As for the addition of matter to our planet through cosmic dust, this is a natural process that has been occurring since the formation of the Earth. While it may contribute to some small changes in the planet's mass, it is not significant enough to cause expansion.

The size of the Earth at the time of the dinosaur extinction is estimated to be similar to its current size. The impact of the meteor would not have significantly altered the planet's size or shape.

The composition of the Earth's atmosphere is determined by a variety of factors, including geological processes and the evolution of life. It is not solely determined by gravity. The presence of oxygen in the atmosphere is a result of photosynthesis by early organisms, not simply gravity favoring heavier gases.