Celestia Forums

Do you know the scale and can you estimate the diameter?

Thanks for the link to the magazine article. It was interesting. It reaffirmed what I had heard that the source was a nova remnant some 170000 lighyears distant. The light from which arrived in 3000BC. The point is, it was the resulting magnetar that is mysteriously burping gamma rays 5000 or so yea...

I have just read about a maganetar gamma emission that occured in 1979. It was traced back to a nova remnant. The light from the nova arrived in 3000BC. I have tried to determine the identity of the remnant to find the distance, then speculate the outcome of a similar gamma emission closer to home. ...

I grow weary of closed mindedness. 5 years ago everybody was sure that the universe expansion was slowing down. Now we know differntly. I am not at all comfortable with the current BH model. It may be exactly correct, but I still have questions. Currently the model allows for atomic nucleus sized, (...

Okay now all of that has been said I can reinterate my postulate. If, to the outside observer, all the matter that is captured by the BH: a) takes an infinte amount of time to pass into the event horizon b) has had its radiation too red shifted/dimmed to be seen Doesn't it follow that what we might ...

I understand that, but if the event horizon is actually matter that someone could theoreticaly touch, versus just a boundary like an invisible fence, that challenges the current black hole model.

Yes, I know, and I expected someone would point that out to me, but this implies that the reason that light cannot escape is due to time dilation, not imense gravity. In the latter case the light is still radiating but being bent 180 degrees and absorbed. In the time dilation scenario, the light isn...

I recently watched a show about black holes. It revisited Hawkings assertion that data is lost. Then, some other dude, whos name escapes me, set out to prove Hawkings wrong and eventually got a moderate admission of possible error, maybe. Anyway during the show this other dude described what an obse...