NASA Johnson Space Center
Started 5th Jan, 2021
What If the gravity of the earth increased ?
Is that has an effect on the biological life
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Dr.Valentino Straser, Thank you for the opposite thinking, I found in the following link that this reduced gravity in dinosaur life was the prospect that the ancient Earth was much smaller in diameter and mass to create a Reduced Gravity Earth then the earth expanded in size from meteors and expanded in gravity during With the passage of time which can be explained more by Expanding Earth theory.
naturally this is a hypothesis which, among other things, also has implications with the Theory of Terrestrial Expansion formulated in 1975 by S.W. Carey. These are points of view that should be discussed in an interdisciplinary context to verify if other models are compatible.
I agree with the complexity of the question, but the problem, in my opinion, must be considered in a holistic sense, since the endogenous activity of the Earth also greatly influences life. it is sufficient to think of the volcanic activity and the extinctions it caused 252 million years ago with the extinctions reaching at least 94%.
you can check the following link on page 16 to 21where there is an explanation of the link between microgravity and biotechnology and the effect of microgravity on protein crystals and mammalian cell tissue on Earth.
you can see page 5, table 1 where there are Physiological impacts of microgravity
in the following link.
I found the two links very interesting and appreciated NASA's teaching. I would like to add to the discussion that the Rome experiment allowed 20% of terminally ill liver cancer patients to be cured with the microgravity technique.
Dear prof. Valentino Straser,
you pointed me to another point which the use of microgravity in medicine and pharmaceutical synthesis and it is an interesting path, but I still thinking about if the gravity increased and people will be like as they are in huge centrifugal equipment and we will bind to the earth and facing hardness in the movement. what will happen to the different constructions in the earth and is this has an effect on the consumption of the different types of energy plus what is the change occurs for the shape of the earth and is this has an effect on the time of rotation of the earth around itself and around the sun.
Dear Khaled Elsayed Ossoss,
Thank you again. The Microgravity Teachers Guide is nice and would have been even more useful to me when I was involved in teaching such matters.
I have recalled that I saw in a film that a wealthy man with terminal cancer had rented a place in the International Space Station or some other similar orbiting lab (was the film "Contact"?).
Since you are thinking about the biological effects of increased gravity, I can say that astronauts and even pilots are trained in a centrifuge. By the way, there is a funny scene about it in the film "Space Cowboys".
On the theoretical side, we may speculate how life on Earth would change if the gravity on it, say, suddenly doubled.
Dear prof. Jose Gaite ,
It is the first time to know about the film which is called contact.
I hear about the space coboys film and the two films are so beautiful 🤩.
From the other side, your speculate is a good alternative question what will happen if gravity is changed from steadly increase to suddenly doubled. 💡
We live at the surface of the planet, which gravitates and rotates. We feel gravitation as the force which is directed to the center of the Earth. This force depends of the mass of the planet. We cannot increase the mass of the Earth. But we can study this question or plants and microbes, creating gravitational acting by means of rotation in laboratory. If the plant is on the rotating platform, it is attracted not only to the center of the Earth but also in the direction of acting force of its rotation. The resulting gravitational force is the sum of the gravitational attraction of planet directed to its center but and along the force of the rotation. of plant.
Larissa Borissova mentions possble experiments with microbes under increased gravity (as centrifugal aceleration). I do not know if they have been carried out?
Anyway, this question is somewhat different from the question of the full life on Earth, as a holistic system, under increased gravity. I said that ths question is theoretical because neither can we change the Earth gravity nor wait until evolution leads it to a new stationary state. Thus, the question may seem a futile speculation, but it is interesting in Astrobiology.
We live on the planet in the static field which is described in GR by Schwarzscield metric for the mass in the empty space-time. This gravitational field is generalization of Newtonian gravitational field created by the mass. The center of Newtonian material sphere is the point, but the center of Schwrzschield solution is the sphere of Schwarzschield with the Hilbert radius r_g = 2GM/c^2. It is lesser that 1 cm for the Earth. the surface of the sphere divides our material world fulled by material substance and fields from the world where physical observer cannot exist. We see that the sphere can increase if the mass of the Earth increases. This sphere is the black hole of Newtonian kind: The body at this surface must move with the light velocity. But it is only theory.
I can contribute to the debate by saying that a little while ago I sent a review of a paper where I report data on an instrumental level that relate geophysical events, such as earthquakes, with variations in microgravity. Some studies are also available on Rg.
Continental drift had a profound influence on evolution of life on earth because geographical isolation is a powerfull motor in darwinian selection. In a paper onRg I correlated it with seasonal variations in centrifugal forces caused by the tilt of the earth axis.
If it's a sudden process the first thing which would occur is that the soil and Earth layer which are not firmly held will slide down and result in a flood also the skulls and bones of every animal will break, suppose it's a gradual process it is very often that the organism's on Earth will try to adapt the environment and a new evolution will take place according to that but the problem would occur with space researchers because the thrust produced by any fuel won't be enough to propel any rocket and hence they will have to find a new alternative, an alternative for the living.
If suddenly, the earth would compact itself, the biogeochemical cycles of the planet would change and with this life itself would be modified. At first the only living organisms would be some microorganisms that are relatively independent of gravity.
Dear Debashish Mukharjee,
It is a good explanation and the earth will be fully filled with water and will be called a water planet. so we must manufacture anything that can be float on the surface of the water as it has happened in the flood, but in this case, it will be called as an earth flood.
It is a good explanation that will lead to a change in time, not only how many hours in the day, but also a change in days of the year. I think the birds will be facing hardness in the flying or maybe disappear. the air will be denser as if you are exposed to pressure.
No single mamallian species has to adapt so fast to a change in gravitaty than homo sapiens because we can can come from a position of laying down to a standing position within less than one second and the blood supply to the brain must continuously be guaranteed. The orthostatic adaptive mechanisms are so strongly developped in humans that they problably play a role in the developpement of 'essential' hypertension.
The force that is experienced in an accellerating fighter plane is not a gravity force ( G is an universal constant) the acceleration of the plane gives the supplementary force.
Long stay in a space capsule has profound physiological effects on the human body which are well known. The lack of gravity force on the cerebrospinal liquor seems to have negative longturn effects on the cerebral function which could be an great obstacle to a long stay (years) in space.
Dear Willy Verhiest,
Presumably, you are not acquainted with Einstein's Principle of Equivalence: the acceleration experienced in an fighter plane is totally equivalent to a gravity acceleration. Please have a look at https://en.wikipedia.org/wiki/Equivalence_principle
Does the body gravity increase when the human died. Does the force will be zero against the gravity of the earth. As you can see that, the one becomes heavier when he loses consciousness. So our body produces the power against gravity to make us stand on our legs. Does the weight of the human rise or decline after death and is this the nervous and muscle systems have a role to combat the gravity.
I can answer in the affirmative the question of increasing gravity on Earth and even show, if interesting, calculations of how much the mass and size of the Earth has increased over 100 million years. The huge size of dinosaurs was possible due to low gravity due to the low mass of the Earth.
The calculations are based on the fact that streams of ether constantly flow into our Earth (as well as into any space object). The density of ether was determined. It is determined how much ether is spent on warming up the Earth's core, how much ether goes on synthesizing chemical elements, how much ether flows back from the Earth to ensure the cycle of ether in the Universe.
Dear Степан Тигунцев ,
There is a source of Earth mass increase that is more plausible than ether, namely, dark matter, which is known to be substantially more abundant than regular visible matter. But gravity depends on the size of the Earth as well. I think that your theory is not in accord with geology.
Уважаемый Jose Gaite
To begin with, I will show the principle of gravity due to ether.
Each space object has a spherical shape and draws in ether streams from all sides of space. It is known to accelerate the flow of ether - this is the acceleration of free fall (USP), which is different for each space object. The airflow rate at any distance from the space object can be determined by the known USS value at that distance. When two space objects (Earth - Moon, Sun - Earth, etc.) are at some distance from each other, they are attracted to each other due to the interaction of multidirectional streams of ether drawn by these objects. The conclusion and explanation of the gravity formula are shown in my article. As an analogy, one can consider the attraction of the hoses of two vacuum cleaners if the hoses are suspended and directed to each other and the vacuum cleaners are turned on.
Ether streams in the center of the Earth are transformed into chemical elements, create thermal energy. As a result, we have a hot core that will never cool, as well as a set of chemical elements that increase the mass of the Earth, increase gravity on Earth (on other space objects, processes are similar). Oil, natural gas, etc. did not originate from plants, they were formed and formed constantly from chemical elements arising in the Earth's core.
Dear All, when we talk about the ether and the force of gravity, we must distinguish between an "attraction" or a "push to the back", as Newton wrote. If I remember correctly the migration of the elements towards the center of the Earth and their subsequent transformations had been hypothesized by the great Russian chemist Dmitry Ivanovich Mendeleev.
Gravity doesn't affect time. Gravity reduces the velocity of photons released against gravitational forces. This leads to the effect of redshift of the Earth. The attached article is described in more detail. Paragraph 4 describes the Pound-Rebka experiment.
Here, I'm discussing that, Is the gravity of Earth increasing or not?
Every day, more than 100 tons of debris, meteorites, and dust sand-size particles strike the Earth. It happened due to continuous impact and collisions are taking place in the asteroid belt. So meteoroids are ejected from the asteroid, later when it is landed on Earth, it known as Meteorite.
Mass of Earth= 5.972 × 10^24 kg
Striking material= 9.07 × 10^4 kg (approx.)
Although it is very less compared to the mass of Earth. but it must have significant changes in the gravity of Earth.
So the increment in the gravity of Earth lead following change-
- Due to the decrement in the rotational speed of Earth, the day will be longer than 24 hours
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