About this subject Master Pasteur said the following:
« The Atlantean race had a stronger physical constitution than the current race because humans needed to support the sun's rays that at that time shone much more strongly on the surface of Earth, because the planet still did not have all the layers of atmosphere that has today. And that's also why humans needed to have darker skin.
Little to little the races in general were less dark and even some races turned white simply because the terrestrial atmosphere was having more and more layers of protection.
And this process of increasing the atmosphere will continue, which cause humanity in a very distant future will go more and more towards a total transparency.
That is what will happen in many millions of years.
The Earth’s atmosphere will become increasingly dense, and in the future the atmosphere will prevent most of the sun's rays from directly touching the surface of the planet.
And this densification of the atmosphere will continue to increase until a threshold is reached where the atmosphere will no longer be protective, but it will become destructive, as is the case of Venus, for example.
(The Venus’ atmosphere is so dense that it prevents the sun's rays from reaching its surface, and it also produces a pressure on its surface 90 times greater than the pressure that exists on Earth, that is the equivalent of being one kilometer under the ocean!!!
And to complicate things more, the atmosphere of Venus is composed of 95% carbon dioxide, which produces an extreme greenhouse effect that combined with the volcanic activity of the planet causes the temperature on Venus to be on average 860°F; while the lead melts at 620°F...)
But I assure you that before Earth begins that cycle of disappearance of physical life, humanity will no longer need to reincarnate on the physical plane because at that time humans will live completely on the etheric plane and the most advanced humans will live on the spiritual planes, which means that humanity will not suffer from that destruction.
And the other kingdoms of life, neither will suffer, since only a few animals will remain on the physical plane and maybe some plants that will be those that have not achieved a complete transformation, and consequently they have not been able to follow humanity in its new superior stage of existence.
(And in another conference, Pasteur mentioned that the Venusians are at a higher stage since most of them already live on the mental plane.)
And little by little the terrestrial atmosphere will become denser until finally it will cause that all the physical life on the planet will disappear. And since there will be no more physical life, nothing will remain to maintain the atmosphere, which will cause the atmosphere to dissolve in space, as is the case with Mercury. »
It is interesting to note that what Pasteur says corresponds to what Theosophy says, since the Theosophical teaching explains that the evolution of the planets takes place through seven rounds (see link).
Currently Earth is in the middle of its fourth round, while Venus is in its sixth round and Mercury is about to start its seventh round.
And on the other hand, Mars is getting ready to start its fourth round, and curiously the Mars’ atmosphere is much dimmer than the Earth’s atmosphere (Mars’ atmospheric pressure is about 100 times smaller).
And science says that the Earth’s primitive atmosphere was very thin.
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And all this makes me consider that in general the atmosphere of the planets has to begin being very fine and progressively it increases as the life that lives on them is developing. Until finally this densification of the atmosphere makes impossible the physical life on the planet, but at that times the kingdoms of life that habit on the planet will have sublimated and they will live on the higher planes of existence of the planet.
And finally, in the last stage of evolution of the planet, the atmosphere disappears and in the physical plane only remains the "skeleton" of the planet while all the life that was developed on its surface has been spiritualized.
And obviously this procedure concerns the rocky planets, while the gaseous planets are still a mystery to me (although we might speculate that a similar procedure may also occur in them).
And you must also keep in mind that the atmosphere can vary considerably during the period of rest between each round, when the life disappears temporarily from the planet.
And finally, Master Kuthumi pointed out that each rule has its many exceptions, so surely there must be many rare cases in the Universe that do not correspond to this general rule.