Originally posted by NeoSocialist
Very interesting, I think you maybe right.
Do you know of any links to pictures or videos of such objects?
Intergalactic meteors are fairly uncommon, and totally random. I've seen a handful, compared to perhaps 10'000 ordinary meteors in my nearly 10
years of observing the sky for meteors. When you do see them, they are usually quite dim, and this combined with their incredible velocity makes them
virtually impossible to capture with any camera.
The only one I know of is the spectrum captured by the researchers which gave rise to the paper I linked to above. It wouldn't surprise me if there
were some photographs out there of intergalactic particles that have been mistaken for ordinary meteors, as they could look quite similar in a
photograph. Without actually having seen the event, or obtaining a spectrum of the event, it would be impossible to tell them apart.
For the same reasons, video footage would be pretty much impossible to come by IMO, but I've put together a .zip with some clips of fast and very
fast ordinary meteors meteors, which will give you some kind of idea of the type of speeds we are talking about here. Ordinary meteors range from
about 11km/s to perhaps 80-90km/s tops - I'm not exactly sure where the cut-off is, or even if there is a 'solid' cut-off. Then we have
intergalactic particles which would enter our atmosphere at speeds ranging from ~100km/s to 300km/s. The meteors in the videos are probably around
Here's the link:
Originally posted by waveguide3
If this phenomena had been a meteor I'd have expected lots of people around the UK to have seen it too. So far, there seems to be no report of a
bright meteor for the nights of 18 or 19 October.
Actually, I've seen plenty of "bright" meteors, even multiple second fireballs that no one else has reported. "Bright" is a relative term
It happens all the time, and the UK is not the best place to spot meteors anyway due to the amount of cloud cover we get, and the cold climate... not
many people out and about, and when they are they are usually more concerned with heading indoors as quickly as possible!
Unless it's a relatively long lived shadow-casting fireball, very few, if any, would ever see it.
Anyway, looks like the mystery was solved, but perhaps this thread will be useful to someone with a similar experience in the future...