DL MARTIN wrote: ↑
Wed Aug 28, 2019 6:55 pm
Again, without context doubt remains that 2=2=4. In other words, if the fact that what is being visualized is 55 millions years ago (but not stated), then how can one validate conclusions as if in the present. To exclude the time variable (t=o) is to dismiss evolution. This just doesn't add up.
55 million years isn't that long in the life of most stars. Admittedly, it can be very long, and more than the lifetime, of a massive star. The light that we see from M61 is dominated by the emission of massive stars, and many of them will have died since they produced the light that reaches us today. On the other hand, the "frozen in time" image of M61 that is the only picture we can ever receive of it gives every impression of making many new stars "now". So even if many of the bright stars that we can see in our "snapshot in time" of M61 have died by "now", many other bright stars have undoubtedly been born.
But it is really meaningless to talk about "now" when we discuss other galaxies. When I was 15 years old, I saw M31, the Andromeda galaxy, through a pair of smallish binoculars. My first view of Andromeda is still the most magical thing that I have ever seen in the sky. What made the experience so powerful was that I felt totally certain that there was another "person" in that blurry spot in the sky. Someone was alive in there. There were habitated worlds in there, and someone in there was actually looking back at me. I felt an overpoweringly strong urge to wave at the person that I was "looking at".
The memory has always stayed with me, but as I kept thinking of waving at the "person" I had imagined in the blurry spot that was Andromeda, I began realizing how impossible my greeting actually was. If by some magical means the waving of my hand could actually be translated into a signal that eventually reached the person I had imagined in Andromeda, then it would take two million years for my greeting to arrive at its destination in our sister galaxy.
If the person that I had waved at had a life span that was even remotely as short as my own, then that person would have died eons before my wave signal actually reached him or her. And if that person waved back at me at that moment when I felt that incredible connection reaching from myself to Andromeda, then that person's wave signal wouldn't reach the Earth until I had been dead for about two million years.
It's useless to talk about what things are like "now" in other galaxies. We get the pictures of them that we get based on the photons emitted by them some time in the past, and that is the best we can do. That is all
we can do.