Listen: How Did We Miss This Week's Shockingly Close Asteroid Flyby?
"An asteroid as large as a football field is just flying past the earth with astronomers not detecting acting it until literally just a day before its closest approach. The giants space rock thought to be up to one hundred and thirty meters wide came within sixty five thousand kilometers of earth on july the twenty fifth in nominal terms. That's about as close as it gets. The asteroids being catalogued as twenty nine. Okay the european paint space agency says this near earth objects close approach illustrates the need for more eyes on the sky was able to observe the asteroid just before its fly by requesting requesting to separate telescopes in the international scientific optical network is on to take images of space rock the observations allow strana missed the determine the asteroids exact back position and trajectory yesterday it was i the technical the day before its closest approach by the southern observatory veneer of asteroids research observations of twenty nine thousand nine okay with an independently confirmed by other observatories including the chiba radio telescope in puerto rico and third telescope in the ice on network following following its discovery with knowledge of the astros would have been in the past based on its current course and by manually searching for it by existing images were found in the past is is an atlas skysurfer archives it turns out birth said they had in fact captured the asteroid in the weeks before it's ultra close encounter with earth but the space space rock was moving so slowly it appears to move just a tiny amount between the images and was therefore not recognized as a near earth object neo and hence the seriousness of the threat <unk>. It wasn't appreciated of course astronomers now of an attracting thousands of asteroids across the solar system so why was this one discovered so late will unfortunately originally currently there's no single obvious reason apart from its slow apparent motion across the sky before it's close approach twenty nineteen okay travels in highly elliptical orbit taking it from within the open of venus out too well beyond that of mas this means the time it spends near earth and therefore time it's detectable both current telescope capabilities is relatively short modules towards the size of twenty nine. Okay i relatively common throughout the solar system but they impact on average only about once every one hundred thousand years or so still an asteroid like that hitting a major city or urban area would cause major devastation destruction based from its current orbital path through the solar system the asteroid one come close to the game for at least the next two hundred years. I'm stewart gary. You're listening space"