3k views

### Can a black hole form due to Lorentz contraction? [duplicate]

Possible Duplicate: If a 1kg mass was accelerated close to the speed of light would it turn into a black hole? Imagine, a rod of length L is moving with velocity approaching the speed of light ...
592 views

### Very Massive Relativistic Body [duplicate]

You're observing a massive object (probably a neutron star), and it is moving at a significant fraction of the speed of light relative to you. The mass of the object is just below the mass necessary ...
1k views

### Does influence on gravity increase with mass when velocities approach the speed of light? [duplicate]

In other words, when a particle's mass increases significantly as it approaches the speed of light (c), does its influence on gravity increase, and if so, does it increase proportionally?
1k views

### Are moving objects producing stronger gravity fields? [duplicate]

If the strength of gravitational influence exerted by a body is derived from its mass and energy then is it true that a moving object which has some kinetic energy should also produce stronger ...
225 views

### What is the smallest amount of neutrinos needed to create a black hole? [duplicate]

Is there some smallest amount of neutrinos needed to create a black hole? Note that this question is not at all the same as the question here If a 1kg mass was accelerated close to the speed of light ...
260 views

### Observed gravity of a fast moving particle relative to observer [duplicate]

Special relativity tells us that a fast-moving object with sufficient speed will appear more massive that it would at rest relative to an observer. Since the strength of an object's gravitational ...
250 views

### Is momentum a source of Gravity in General Relativity? [duplicate]

The Stress-Energy-Momentum Tensor is the source of gravity in General Relativity. Momentum, as well as mass, pressure and shear stress are components of that tensor, which represents the flow of ...
166 views

### How can gravity be independent from velocity? [duplicate]

If gravity is directly related to mass, and mass increases as an object travels closer to light-speed, how can velocity not affect gravity?
124 views

### Gravitational atraction of fast object [duplicate]

Let's imagine a asteroid that travels with 0.99999999999999999c. (I know it's impossible). Anyway... Relativistic mass of such object would be almost equal to earth's stationary mass. Now let's ...
105 views

### If I kept getting closer and closer to the speed of light, what would be the gravitational effects appearing like to an observer? [duplicate]

Now, with special relativity applied to the scenario of me getting closer and closer to light speed, my mass would increase with respect to the observer, and also my length would contract in the ...
80 views

### Why don’t objects approaching the speed of light form a black hole? [duplicate]

Although I’m rather new to physics and this site, I wanted to ask a question because it’s been sitting on my mind recently and I can’t figure it out... Forgive me if I’m missing something but here ...
110 views

### Reference frame of high speed rocket [duplicate]

Imagine a high speed rocket, traveling past a star. In the rocket's reference frame, the star's length is contracted. This is a lot a mass in a thin line, so it the rocket's reference frame, could it ...
57 views

### Dark matter and velocity [duplicate]

We know that as the speed of an object increases, so does its relativistic mass. But can it be said that dark matter may be due to the increasing relativistic mass of nebulae, stars, galaxies, etc. ...