Could Humans Survive Falling into Artificially Generated Gravity Wells in Space?

In summary, humans may be able to survive falling into artificially generated gravity wells in space, depending on the specific conditions and technology involved. While the sudden change in gravity could cause initial disorientation and potential injuries, humans have adapted to various levels of gravity on Earth and may be able to adjust to artificial gravity. However, there are also potential dangers and challenges, such as the need for advanced technology and potential side effects on the human body. Further research and testing are necessary to fully understand the feasibility and potential risks of this scenario.
  • #1
saltorio
I have a completely speculative sci-fi question I've been wrestling with, and I'd love some feedback from better minds than my own:

Lets assume we develop the technology to artificially generate gravity without mass (maybe using electrogravitics). We build a spaceship that can project a gravity well at a fixed distance in front of it. This in turn pulls the ship towards the gravity well, while simultaneously moving the gravity well itself (kind of like dangling a carrot in front of a horse).

1.) Would people aboard the spaceship essentially experience free-fall (weightlessness), as they'd be constantly falling towards the gravity well but so is the ship (like being on a reduced-gravity aircraft)?

On a related note:

2.) What are the effects on a human body of falling into a gravity well that is greater than 1 g, when atmosphere is removed from the equation?

Let's say you're a human in a space suit and you're falling down towards a very dense rock (where the gravity is 3 g) that has no atmosphere. When you're falling, you're essentially in free-fall, so it's like your weightless. Would you have trouble with blood flow and and other issues normally associated with high g-force on the human body (such as when accelerating in a fighter jet)?
 
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  • #2
1.) Would people aboard the spaceship essentially experience free-fall (weightlessness), as they'd be constantly falling towards the gravity well but so is the ship (like being on a reduced-gravity aircraft)?
Probably, but it could depend on the fictional device (how does it accelerate the spot of attraction, by the way?). If it is close to the spacecraft , different parts of the spacecraft could experience a different acceleration.

2.) What are the effects on a human body of falling into a gravity well that is greater than 1 g, when atmosphere is removed from the equation?
In a uniform field: nothing, you cannot notice it at all (unless you look at other objects as reference). In a non-uniform field, you can feel the non-uniformity (at least in theory).
 
  • #3
The reason that you're affected by high gees is that there's something stopping you from falling freely in it (e.g. the ground or your seat). If there's nothing between you and the gravitational source, you won't feel anything until tidal forces come into the equation. Basically, your feet are closer to the source than your head, so they're pulled harder, and if the difference becomes great enough, you're torn apart. Things like stars and planets aren't dense enough to create noticeable tidal forces on a human scale at any distance, but neutron stars and black holes fit the bill at close distances.
 

1. What is a gravity drive?

A gravity drive is a theoretical concept that involves manipulating gravity to propel a spacecraft without using traditional forms of propulsion such as rockets or engines. It is based on the idea that if gravity can be controlled or harnessed, it can be used to generate thrust and achieve propulsion.

2. How does a gravity drive work?

The exact mechanism of a gravity drive is still a subject of research and debate. Some theories suggest that it involves creating a gravitational field with a very strong gradient, causing the spacecraft to accelerate towards it. Others propose using the curvature of space-time to create a "warp bubble" that would allow the spacecraft to travel faster than the speed of light.

3. Can a gravity drive be used for interstellar travel?

While the concept of a gravity drive has been explored in science fiction, there is currently no evidence to suggest that it is possible to use it for interstellar travel. The technology required to manipulate gravity in such a way is far beyond our current capabilities.

4. What is free-fall?

Free-fall is a state of motion where an object is falling under the sole influence of gravity, without any other forces acting on it. It is often associated with objects falling towards the Earth, but it can also occur in space where the gravitational pull of a planet or other celestial body is the dominant force.

5. How does free-fall relate to the concept of weightlessness?

Objects in free-fall experience a sensation of weightlessness because they are essentially in a state of perpetual free-fall towards the Earth or another celestial body. In this state, the object and its surroundings are accelerating at the same rate, giving the impression that there is no gravitational force acting on the object. This is the same sensation that astronauts experience in space, where they are constantly in a state of free-fall around the Earth.

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