83
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 16 Jun 2023
83 points (100.0% liked)
Science
13006 readers
8 users here now
Studies, research findings, and interesting tidbits from the ever-expanding scientific world.
Subcommunities on Beehaw:
Be sure to also check out these other Fediverse science communities:
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
founded 2 years ago
MODERATORS
can someone explain if the light of its supernova will reach us in our lifetime?
Yes. Because if it's due to go supernova in the next few decades from our point of view, then it has already gone supernova in its own frame of reference, and the light from it is currently enroute. The star is 600 lightyears away.
is it from our own point of view or its point of view? other guy said the opposite lol. idk what to believe
It's always from our PoV.
We have no idea and no way of knowing what's actually happening 600 ly. away, right now.
All our measurements are based on the light and radiation we can observe from here. We have no sensors close to it.
So if the paper is calculating supernova in couple of decades, it means the star actually went supernova 600+ years ago.
Even if we did have a satellite in orbit around Beetlejuice, its data would take just as long to reach us as the light from the star itself.
This relatively business is annoying. I suggest we just get rid of the whole thing and go back to the ether.
Ok! Thats what i assumed but the other guy said something else. I should have been able to guess based on the fact that nothing is faster than light, but oh well.
Astronomy is done from the observer's point of view.
I might be absolutely wrong though, I don't really know anything... I just checked how far away it is... but if it has gone supernova already, then we might have a chance to see it? That would be amazing.
There is no way for us to have any information whatsoever about an object until the light (ie, information) has reached us. For all intents and purposes, from our local reference frame, it hasn't happened until we observe.it.
well TIL