00:00The closest black hole to the solar system is believed to be about a thousand light-years away.
00:08And one of the most fascinating aspects of this is that it's possible to see the stars with which it interacts.
00:14with the naked eye, without using a telescope.
00:19You just have to look in the southern hemisphere, for the Telescopium constellation.
00:24In this area you will find the star system HR 6819.
00:30It was discovered because observations revealed that one of these stars orbits an invisible object every 40 days.
00:37That object is precisely a black hole, which could have a mass at least 4 times that of the Sun.
00:46It is estimated that there are at least 100 million black holes in our galaxy, so there could be many more.
00:52closer to the solar system, but they simply haven't been detected yet.
