Twenty Years, First, Dr Eubank discussed on SpaceTime with Stuart Gary


Just mention that. The studies now indicate that roundabout seven of these interstellar objects probably pass through the solar system every year. And the issues detecting them. You've got to pick them up with us. We could do that now. Because we've got this. This was going to say flotilla. But they're not floating array of of of near objects telescope discovers truckers. Things like stars to their on haleakala on the island of maui instruments of that kind which are able to look for a moving through the solar system. Usually they're objects belonging to the solar system. But they can't pick up these others as well. So i think the estimate now is around about seven interstellar asteroids per year but only about two into stella a comex. The that rare. Perhaps it's partly because of the dynamics have come comets normally hang out on the on the boundaries of solar systems and occasionally get disturbed to fall in the thing about comics is generally speaking very small that nucleus of a comet is only probably seldom more than twenty thirty kilometers across and then forms this beautiful town when he gets near the some asteroids route about the same size probably brighter. It's a very dark on the surface as well so anyway. Whatever the deal is it looks as though there are enough of these to really think about how you might into set them. How you might you know. Basically further research on them. There is actually another another quotation. I think again from dr eubank. We assume that come from are formed with stars and their planetary systems. The after they are sorry and after the after they're on their own. They share the same galactic dynamics stars to another ones. This is how you start doing statistics. For how these things might swirled around the galaxy. We use the to known isos. One one i am. The one i refers to it being the first interstellar object detected to i borisov the efficiency of past and current astronomical surveys to estimate the number of these objects in the galaxy and stellar velocity estimates from the guy of mission. A mission looks at the positions of stars very accurately to estimate the velocity spread That we should expect. And as i said they think there might be seven astroid coming into in and to to perhaps a largely a biggie. Pardon they dropped that statistic. It's not to per year it once every ten to twenty years. So they are much rarer become comments. You may. Yeah it is. I'm just wondering how they differentiate between local comets and asteroids that are now solar system and the ones coming from the outside that being flying at us by people who obviously lock is very much but Is it all about the angle. Is it all about the angle of the tack the spayed or it's it's those sorts of things angles lesson bonkers comments long period comets come from all angles out the cloud which is to the wrapped around the solar system but the the key thing is the speed because he you know these two objects were both traveling at speeds that could not have bound to the solar system in other words. There was no way that we're never gonna stop and go around the sun. I think who was roundabout twenty six kilometers per second. It's it's highs philosophy which is very much above the escape velocity of the solar system so it comes and goes..

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