Starship Asterisk*

I like to think I understand the vastness of the universe and how something so big can seem so small. A blackhole that wandered close to a galaxy would never affect it in such a way. if it did it would have to be some blackhole a scary sight indeed. See my theory on how the universe works and you'll understand how my mind works .

doesn'tmatter wrote:This galaxy should be called Rearing Horse Galaxy. It looks like a horse on its hind legs.

Or.................. a dog giving someone a paw lol. The dogpaw galaxy sounds better anyway.

Dr Ohm wrote:I believe this Starburst Galaxy NGC-1313 is the best proof I've seen yet that Black Holes do wander around out there in the Universe. One passed close enough to this once previously Barred Spiral Galaxy and literally tore it apart. It caused massive gravitational waves to pass thru it causing all the gas & dust compression into the rampant Star urst Formation we see today. Once this Galaxy finally pulls back together it is going to be very bright. Just my opinion.

The largest black hole only has a 18 million solar mass gravitational field whereas a galaxy has almost a trillion solar mass gravitational field.

How about wandering blobs of dark matter instead?

Chris Peterson wrote:

dduggan47 wrote:I'd have thought that since we're dealing with light, that distance and time are pretty much the same thing. We're seeing the object as it looked 15 million years ago.

What am I missing?

It's a question of semantics. "Now" has formal meanings in physics, and can be used different ways. It is perfectly correct to talk about "now" in terms of the relationship between two objects and their light cones. In a very real sense, we are seeing every object as it is "now", even if it is 15 million light years away. It doesn't matter if the light took 15 million years to reach us- we are seeing it as it is now in our own frame of reference. In that sense, what is happening "now" if our clocks could somehow be synchronized (which is a difficult concept) is actually happening 15 million years in the future.

It is also possible to use "now" as if there were a universal clock. It really comes down to the math chosen for an analysis, and it's not so clear that either way of using "now" has a better or more accurate physical meaning than the other.

Got it. Thank you, Chris.

I believe this Starburst Galaxy NGC-1313 is the best proof I've seen yet that Black Holes do wander around out there in the Universe. One passed close enough to this once previously Barred Spiral Galaxy and literally tore it apart. It caused massive gravitational waves to pass thru it causing all the gas & dust compression into the rampant Star urst Formation we see today. Once this Galaxy finally pulls back together it is going to be very bright. Just my opinion.

This galaxy should be called Rearing Horse Galaxy. It looks like a horse on its hind legs.

Could the colliding galaxy be behind NGC 1313 to us?

Kalen wrote:Maybe the collision is happening right in the picture itself. Could it be that both galaxies are imaged in this picture, caught in the middle of a collision where one galaxy is passing through another?

The photo seems to show at least two - perhaps 3 galaxies; from the centre to 2 o'clock is a spiral arm; from the centre to 7 o'clock is another; and at 1130 is an interesting circle of stars - from the collision perhaps?

Could the expelled smbh have caused a central direction "implosion" in this galaxy merger? Evidence, such as the central ring formation displaced upward in this photo, looks very similar to a smoke ring formed as a wind burst from one's lips while blowing smoke. I.e. the gravitational effect of a rapidly moving massive object plowing through the center of this galaxy.

Maybe the collision is happening right in the picture itself. Could it be that both galaxies are imaged in this picture, caught in the middle of a collision where one galaxy is passing through another?

Is a close encounter with high relative velocity between this galaxy and a dense dark matter concentration out of the question?

Perhaps the offending galaxy is on the opposite side of the one we're viewing so we can't see it.

But, since there are such an apparently huge number of young blue stars in comparison with the older red ones, I think we're looking at a nearby (if 15Mly is near!) proto-galaxy ... one that hasn't had time to get organized yet.

Perhaps the absence of a large enough black hole which would provide the method for an equalized rotation?

What a wild galaxy! My guess would be that it is an old collision. There are remnants of the spiral of one of the galaxies. But the separate identities are fading. The two are merging and will probably form a new spiral eventually. I am curious about other merging galaxies, to know if there are examples of young, middle-aged and old mergers and how they might look. Some future APOD's?

dduggan47 wrote:

Vincent Pinto wrote:The immensity of space is at once staggering and yet marvellous. And to assist us, the "light-year" is a very easily understandable term although not fully apprehendable due to our natural limitations. So I marvel at the immensity keeping in my mind that it is a measure of distance only, and not one of time.

I'd have thought that since we're dealing with light, that distance and time are pretty much the same thing. We're seeing the object as it looked 15 million years ago.

What am I missing?

If we are sticking to verifiable science ddugan47, you are 100% correct - both time and distance are implied by the term 'light year'. Anything else is obfuscation and discombobulation .................

dduggan47 wrote:I'd have thought that since we're dealing with light, that distance and time are pretty much the same thing. We're seeing the object as it looked 15 million years ago.

What am I missing?

It's a question of semantics. "Now" has formal meanings in physics, and can be used different ways. It is perfectly correct to talk about "now" in terms of the relationship between two objects and their light cones. In a very real sense, we are seeing every object as it is "now", even if it is 15 million light years away. It doesn't matter if the light took 15 million years to reach us- we are seeing it as it is now in our own frame of reference. In that sense, what is happening "now" if our clocks could somehow be synchronized (which is a difficult concept) is actually happening 15 million years in the future.

It is also possible to use "now" as if there were a universal clock. It really comes down to the math chosen for an analysis, and it's not so clear that either way of using "now" has a better or more accurate physical meaning than the other.

Perhaps it lacks a black hole to form a well defined center.

To my untrained eye, it looks NGC1313 once had the traditional "disc shape" with everything spinning in a vortex around a central black hole. But it looks like the black hole quit sucking and that the black hole may have had some sort of "blowback" (seen as the column shape coming from the center of the galaxy).

I like the word ‘discombobulated’, I use it often even around my friend Bob. I venture a guess that today’s APOD galaxy is simply the aftermath of some intergalactic war and we are witness to the loser’s vantage point in this image. Never know what them space aliens are capable of doing… even to a fine and probably previously more aesthetic natural cosmic wonder. Now it’s just discombobulated all over the place.

It appears to me that the galaxy did not assume the usual disk configuration, but instead is more three-dimensional. Perhaps this is obvious and the question is why didn't it assume the standard, more two-dimensional disk configuration? I wouldn't be able to speculate on that since I don't know the theory of why galaxies tend to form disks. I do understand the reasoning behind the rotation.

If we arbitrarily pick a direction in the universe, and mark it as North, is there a preference with respect to the rotational directions of galaxies?

I dunno, I think it kinda looks like a big dog giving someone a paw.

Northweldor wrote:This should be named the Vulture Galaxy!

I like Starburst; It reminds me of a star shell exploding during a festive celebration!

This should be named the Vulture Galaxy!

I'd have thought that since we're dealing with light, that distance and time are pretty much the same thing. We're seeing the object as it looked 15 million years ago.

What am I missing?[/quote]

We colloquially say sometimes that a store is 5 minutes drive when in reality the store might be say 5 miles away. But miles is a measure of distance, and minutes a measure of time, and distance and time are not the same thing. But we see how easy it is with constant usage to "fuse" the two (actually, confuse the two). What is holding the two together is the speed of travel, which in this case has not changed; the assumption being that the laws of physics held true and invariant from the time we left home right until we reached the store. This reasoning is quite understandably extended and assumed to be true of light when the universe as a whole is considered from its beginning.

Unfortunately the rules of this forum don't allow me to say anything more because I have come to cross over the line to the Theory of Creation (as against the Theory of Macro-Evolution where I was earlier). But, if you would like more info, which is very good, please google: "John G. Hartnett" "A new cosmology: solution to the starlight travel time problem" as a starting point. It has helped me a good deal.

Vincent Pinto wrote:The immensity of space is at once staggering and yet marvellous. And to assist us, the "light-year" is a very easily understandable term although not fully apprehendable due to our natural limitations. So I marvel at the immensity keeping in my mind that it is a measure of distance only, and not one of time.

I'd have thought that since we're dealing with light, that distance and time are pretty much the same thing. We're seeing the object as it looked 15 million years ago.

What am I missing?