What is the proof that mass is having an effect on space (and not space having an effect on mass)?

If we accept the general relativity view, spacetime does have an effect on the motion of the mass (or energy).  Mass tells spacetime how to curve.  The curvature of spacetime tells mass how to move.  There is no "limit" to the extent of either

Where did Earth get its gravity from?

From its mass. The earth weighs 5.98x10^24 Kg, IIRC, and has a radius[1] of 6378495m. so gravity = [math] 5.98e24 * 6.67408e-11 / 6378495^2 = 9.81 m/s^2[/math][1]/. Yes I know! oblate spheroid... but what the hell!

Is it possible that light also bends space time fabric like gravity?

This question itself is questionable. Space-Time Continuum is being debated since the era of Einstein & Poincare and even presently it is an enigma. In May, this year, the fifth conference on the Nature and Ontology of STC was organized in Albena, BULGARIA and the theme was Nature of STC - real or imaginary?

If flat earthers are correct and the earth accelerates upwards at 9.8m/s wouldn't all objects 'fall' at the same speed since the earth is moving not the objects?

I like Ed Smiley's answer... it at least tries to answer a queer question with a scientific proof of the incorrectness of its premises.There are abundant possibilities of proofing that Earth is not flat. Going o a mountaintop and looking around (good sighting

Does anything other than gravity bend light?

The fact that gravity forces can and do alter the vector of photons of light/radiation is significant, since that only happens with particles with mass, meaning it is matter. Therefore elemental photon particles have mass just like all the other particles and matter in the Universe, which also fits ALL the other properties of photon particles.

Can humans survive 3 times earth's gravity?

I agree humans are a very adaptable species.But there can be 3 scenarios possible in this caseif there is sudden surge in gravity for a short while, humans will face some problems, but the human race will continue to survive.If there is a sudden and sustained surge in gravity, the whole ecosystem

Is it possible to measure the speed of gravity?

Yes.  Three years ago as an undergrad I worked with LIGO, the Laser Interferometer Gravitational Observatory, to see how accurately we could measure the speed of a gravitational wave (the speed of gravity) if we had a detection of a continuous gravitational wave from a known pulsar. We haven't gotten a detection yet, but if we do,

How much gravity is necessary to bend light well?

The Schwarzschild radius (historically referred to as the gravitational radius) is the radius of a sphere such that, if all the mass of an object were to be compressed within that sphere, the escape speed from the surface of the sphere would equal the speed of light.R=2Gm/c^2 (formula)The bodies having a radii smaller than

Could Olbers' paradox be explained by black holes?

Any single sight line must end someplace; adding black holes to the mix means that each sight line ends on a black hole /or/ a star. since we see far more emptyness than stars, that implies that black holes are drastically more common than stars, which doesn't make a lot of sense.the black hole would block all

Do gravitational waves travel faster than the speed of light?

Answer to: Is there a speed like the speed of light other than the speed of the gravitational wave?I'm not sure what you mean. Are you asking if there is another speed which all observers in different inertial reference frames will agree

Why don't clouds fall to Earth due to gravity?

As the rule of thumb you can always(almost) assume that the things with less density float on things with higher density. And water do have less density than air, so people often think- Why the heck does it float on air?The explanation is rather simple.The cloud is not only millions of pounds of water. It has a lot

Why is the speed of gravity equal to C?

When speaking of ‘c' as the speed of light and gravity, it is useful to remember that the speed of light in a vacuum is a consequence of ‘c' as fundamental constant of nature that comes into play in many ways that do not involve wave

What is the maximum speed of a gravity wave?

Gravititional waves were first observed from a merger of black hole pair on September 2015(announced by (LIGO) allowed a more direct measurement of their speed. The extent of any deviation of the speed of gravitational waves (vg) from the speed of

Can gravity exist without mass?

Gravitational force, or spacetime curvature results from energy density and pressure, not mass, nor mass density. We could include a couple more but these can be eliminated by a change of coordinates. (I don't know why it became popular to confused mass with energy density.)Now, light has no mass, but possessing energy and a density of energy, it is

Can humans survive without gravity?

The question has changed from Would we be able to survive if there was no gravity on Earth to Can humans survive without gravity. The original has been handled by many responders, and frankly has crossed the border between asking about the hypothetical vs. an impossible situation anyway. This is a

Does gravity move at the speed of light?

Locally gravity and gravitational phenomena are instantaneous due to instantaneous changes of local parameters. With regards to your shifting of the Sun, then due to the fact that all matter essentially possessing mass cannot move faster than light speed, the delay would be proportional to the Sun's velocity away from Earth, which we would not

If the flat Earth has no gravity, what holds us down on the ground?

Some say it's constant acceleration. They then proceed to ignore how all the starlight would be blue-shifted into oblivion, and how much energy that would take, and just how high the radiation dose from cosmic particles would be...

What is the gravitational force act on the Sun?

Although the planets of the Sun exerts a little gravitational force on the sun, our galaxy (The Milky way) as a whole and particularly the super-massive galactic centre located in the direction of the zodiacal constellation 'Sagittarius' exerts a tremendous and far reaching gravitational force on each and every star, including the Sun, which forces

What can prove that the speed of gravity is equal to the speed of light?

Gravity in itself does not have 'speed'. But gravitational waves, that are the ripples in the fabric of space-time caused by fluctuating gravitational fields travel at the speed of light. It was such a gravitational wave caused by merging of two massive black holes that was detected by the

Is it strange to consider the speed of light and gravity equal?

I though you were asking whether gravity was the same thing as the speed of light. Having read other people's answers I now see you mean ‘the speed of' each.The existence of gravitational waves has recently been confirmed by the LIGO experiment.

Even light is considered to be a particle, then why is its speed not reduced due to gravity?

Well it is affected by light regardless of what others have stated at quora.This is bone of contention with me. I see so many people who declare that light is a constant and is not affected by gravity (meaning lights speed) & they declare that gravity

How much gravity is necessary to bend light well?

The Schwarzschild radius (historically referred to as the gravitational radius) is the radius of a sphere such that, if all the mass of an object were to be compressed within that sphere, the escape speed from the surface of the sphere would equal the speed of light.R=2Gm/c^2 (formula)The bodies having a radii smaller than

If sun has gravity then are we coming closer to sun as the day passes?

Thanks for the A2A Darshil ShahThe Earth goes around the Sun because the gravitational force exerted by the sun is balanced by the centripetal force. This is similar to Swirling a piece of marble connected to a rope. The moment you leave the other end of the

Do all stars orbit a black hole?

The proper motion of our sun is primarily in and out of the plane of the Galaxy. A further component is the galactic rotation but only the innermost few Suns can be said to be orbiting the central black hole in the way normally understood.

Does anything other than gravity bend light?

The fact that gravity forces can and do alter the vector of photons of light/radiation is significant, since that only happens with particles with mass, meaning it is matter. Therefore elemental photon particles have mass just like all the other particles and matter in the Universe, which also fits ALL the other properties of photon particles.

Can black-hole be considered as a perfect black body? If no, why?

Every black hole that exists in the vicinity of other matter (which is practicallyall of them) is thought to have an accretion disk. And if we could get close enough to that disk to see it, we'd find that as the matter in it accelerates, it emits progressively more-and-more energetic light!In other words, the

What would happen if Mercury crashes into the sun due to a sudden gravitational pull?

Whatever caused the ‘sudden gravitational pull' strong enough to significantly shift the orbit of Mercury would at the same time, have messed up the rest of the solar system.The best case scenario I can think of is that the Earth's orbit is largely unchanged, but we get battered

What is the temperature of space when there are no objects or stars and just empty space?

Unlike the earth's atmosphere, space has no temperature. It is only when we put something in space - like a spacecraft, or an astronaut, that we can measure the temperature. You are aware that heat is transferred by (a) conduction, (b) convection and (c) radiation. In the near vacuum of

Do gravitational waves travel faster than the speed of light?

Answer to: Is there a speed like the speed of light other than the speed of the gravitational wave?I'm not sure what you mean. Are you asking if there is another speed which all observers in different inertial reference frames will agree

Why is gravity still technically just a theory?

There is no hard-and-fast rule, but usually scientists use "law" to describe specific things, like a single equation, and "theory" to describe comprehensive frameworks. The words describe the type of knowledge, not how certain it is.For example, you could reference "Newton's theory of gravity", which refers to the entire way in which

If the Sun suddenly stopped exerting a gravitational force on the Earth, what type of trajectory would the Earth follow?

First I should mention that the gravitational effects continue for minutes after disappearance of the sun because of the cosmic constant.Secondly, the exact behavior is a complex scientific question.Of course a ball with the connection to the center of rotation goes in a straight line after disconnection but the earth can hardly be reduced

Does light travel forever or does it eventually fade?

Imagine an ocean in a dead calm. You throw in a rock, and the ripples spread outward. They get smaller and smaller, but do they fade away entirely? After a few yards, they seem to be gone, but the effect continues, just too small to see.In one sense, nothing stops the ripple, so it goes on forever.

If gravity can bend light, is it possible to stop light?

The model where gravity is curvature of space, the light divides length, not angle, so there is more length towards the heavy matter, and light heads towards that. With a black hole, one supposes that nearly every path from the singularity is a closed loop that ends at the same

Could Olbers' paradox be explained by black holes?

Any single sight line must end someplace; adding black holes to the mix means that each sight line ends on a black hole /or/ a star. since we see far more emptyness than stars, that implies that black holes are drastically more common than stars, which doesn't make a lot of sense.the black hole would block all

If the gravitational force exerted by the Sun suddenly disappeared, what would happen to the motion of the Earth?

Imagine a slingshot. Not the modern slingshot, with a Y-frame and rubber-band construction, but the traditional, old-school slingshot, with a leather

How long can a person survive in a black hole?

Not a second, you would be dead before you crossed the event horizon, but in theory if you made your way inside an black hole and you had a friend observing you from a distance, the atoms in your body would be pulled apart and

Can we leave the earth's atmosphere by climbing a hypothetical ladder lengthy enough?

Short answer: Yes.Longer answer: I will ignore all the physical complications of the ladder and concentrate on the "escape velocity" part of the question. You are right to imply that don't need to reach the Earth's escape velocity to leave the atmosphere (or even to escape from the Earth's gravity completely).

What can prove that the speed of gravity is equal to the speed of light?

Gravity in itself does not have 'speed'. But gravitational waves, that are the ripples in the fabric of space-time caused by fluctuating gravitational fields travel at the speed of light. It was such a gravitational wave caused by merging of two massive black holes that was detected by the

Does gravity bend light & time?

Short answer: No. Not really. (i) Light always travels in a straight line. (ii) Time is not something tangible.Einstein formulated the General Theory of Relativity which radically altered everyone's view of space and time. Gravity is the same as acceleration; for instance, it causes all objects to accelerate towards the earth

Can humans survive without gravity?

The question has changed from Would we be able to survive if there was no gravity on Earth to Can humans survive without gravity. The original has been handled by many responders, and frankly has crossed the border between asking about the hypothetical vs. an impossible situation anyway. This is a

What happens when an unstoppable object collides with an immovable object?

Short Answer: Stress developed in the object causes strain and deformation. Long Answer: The Immovable Object: Let's assume a block of reasonable length, width and height, the one you can imagine easily. And since this block is immovable we have to lock this

If the moon had everything humans need to survive, would we be able to live peacefully without gravity?

Who told you the Moon has no gravity? It has 1/6 of Earth's gravity. You need to read more. Study science and physics.