If light follows the path of a curved space than it should be revolving around our Galaxy in a circle?

Question

doesnt our milky way suck in light?

Isnt Our Galaxy is even more massive than a presumably a black hole.?

Answer 1

This is one example of questions which can never be answered with certainty. Science cannot answer all the questions in our universe, this is Goedel's incompleteness theorem. If we use our present discovered scientific laws to answer this question, how sure are we that this scientific laws buckle down at the scale we're trying to employ it? That was the mistake we made when we employed newton to solve einstein's problem. How sure can we be that we can employ einstein to solve our grandchildrens problem? We have not even gone outside our solar system, how sure are we that we can solve the problems which involves the fringes of the universe?

Why am I saying this? Its because at this stage of our present scientific knowledge, we are not yet in a position to answer your question. All you can glean from your question will be conjectures and maybes.

Answer 2

That would be if the universe were curved like a sphere. But the universe is curved in the opposite direction, like a hyperboloid. The light does not go in a circle. Besides, if the universe were curved as you say, the light would take until the "big crunch" to reach your back. The big crunch is after gravity takes over and the universe collapses on itself. This by the way will never happen, because the universe is accelerating outward.
The light would never really go around a galaxy, photons cannot really orbit something, they are going much too fast. They can only orbit a black hole, but this is not very likely to last for a long period of time. Even if they orbited the black hole, you would not be able to detect that.

Answer 3

The idea of "curved space" is a way of interpreting General Relativity. The presence of matter "curves the space". You can think of this (in two dimensions) as a landscape with hills and valleys and the occasional deep well. Particles with no external forces (that is, no magnetic forces, etc.) on them will slide around the landscape as if they were frictionless. But their actual motion depends on how fast, and in what direction, they are going. A slow particle will tend to wind up in the valleys (or fall in a well), but a fast particle will tend to zip along the landscape, and only be a little affected by the hills and valleys.

In this analogy, our Galaxy is a deep valley, shaped like a trumpet horn pointing upwards. In the middle, the throat of the horn is infinitely deep, since there is a Black Hole in the Galactic center. The Sun travels around the center in a (approximate) circle, near the outer parts of the horn. But the Sun is not going very fast---only 210 km/s. Light is made of particles (photons), but these photons are going much, much faster (in fact, at the speed of light 299792 km/s). In general, photons will not be much affected by the Galaxy---they will zip by and only be deflected a little bit. Light emitted by the Sun, for example, does not curve around the Galaxy but mostly escapes in nearly straight lines.

There is, however, a place deep down near the Black Hole in the Galactic center where the light does go around in a circle. There, the steep sides of the bottomless well are exactly steep enough to keep photons in orbit. This place is a few kilometers from the center of the Black Hole. These orbits are not stable, however, and so any photon finding itself on such an orbit will eventually either fall into the Black Hole or will escape from the Galaxy.

Answer 4

no, the milky way does not contain enough mass to bend space to the point that light can actually be sucked back in. a black hole is the only known (okay, theorized) object that can suck in light. other objects cause light to bend in it's path (example, the sun has enough gravity to do this) but to continue on in the same general direction. think of shooting a basket ball at the rim when it just zips around part of the rim and then goes flying out... same thing. the curvature of the rim vs the velocity of the basketball is not enough to pull the BBall in at that speed. just the same, the curvature caused by MOST of our galaxy is only enough to minorly deflect light as it travels.

Answer 5

Only if space around our galaxy is curved enough for light to not escape. It isn't. If it was, our galaxy would be a black hole.

Answer 6

Or the edges of space fabric are joined. Like a pillowcase. We live on the interstitial plane. In that way light would still be able to bend around the corner and continue on.

Answer 7

Even einstein beleived in what you said. He said that if we put a torch in the sky with infinite power it should reach our back......

Looking at the way light bends around stars this should be the case.