What is really, really neat to notice isn't just the detail in that final image.... look behind it, and there are whole edge-on spiral galaxies in the distance. Not stars. Galaxies.
The nebula is about 1375 light years away. Those galaxies in the distance.... are billions of light years away. It's hard to comprehend.
> look behind it, and there are whole edge-on spiral galaxies in the distance. Not stars. Galaxies.
just to add to the awe of that, pretty much every "dot" in one of these images is going to be another galaxy. individual stars from within the Milky Way will have diffraction spikes and very obvious as a single item.
It's dizzying even on the galactic scale to internalize that discrete, visible stars are "right there" compared to the general murkiness of the Milky Way. A sphere of very near stars right next to us relatively speaking
This is so far away from our concept of counting things that the mind just gives up. There's no comparison, no dumbing down to X amount of football fields, just nothing.
I find it depressing, confusing but also inspiring and fascinating at the same time.
Yes, there is so much we can’t possibly know or experience in our lifetimes, perhaps in the span of time our species will exist, to the extent that it becomes easy to imagine ourselves more like bacteria on a speck of dust floating in the air rather than on any scale towards the inverse. We’re incredibly small in size and mental capacity.
In ways the bacteria on the dust are oblivious to the scale and nature of the world around them, we seem similarly lost and hopeless in the pursuit of comprehending the universe. We just weren’t built to grasp this kind of scale. We can enjoy images of the tiniest little slices of it, though. I’m actually very grateful for that. I think it’ll be a source of endless wonder for my entire life.
I heard comparisons of the number of stars in the observable universe to the number of all grains of sand on Earth's beaches, or the number of molecules in a bottle of air. Not sure if that helps anyone, though.
The radius of the observable universe is estimated to be about 46.5 billion light-years. The Horsehead Nebula that they zoom into in the video is 0.000001375 billion light-years from Earth. I'm doing mind acrobatics to try to understand the scale but... nope! :)
I found this mesmerizing. Particularly fun is to scrub forward and backward through the video to clarify where exactly you're looking. (I found it worked better on the embedded video in the article than the yt one, not sure why)
Do you (or does anyone) know about how zoomed in the video is at the start? Like is that the milky way and are there some things in that starting frame that I could identify with the naked eye?
It seems like it is already quite zoomed in to start with, but I can't tell how much.
At the start of the video you are looking at a good potion of the whole visible sky. If you look at the very center of the frame, there is Orion, and you can see the three close bright stars together that we zoom in towards are Orion's belt.
https://www.youtube.com/watch?v=TkVprNB5XbI
What is really, really neat to notice isn't just the detail in that final image.... look behind it, and there are whole edge-on spiral galaxies in the distance. Not stars. Galaxies.
The nebula is about 1375 light years away. Those galaxies in the distance.... are billions of light years away. It's hard to comprehend.