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though an estimated 100 million black

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holes Rome or Milky Way galaxy these

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objects are invisible and so very

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difficult to detect

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astronomers now believe they may have

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precisely measured the mass of an

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isolated black hole for the first time

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after six years of observations NASA's

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Hubble Space Telescope found evidence

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for a lone black hole about 5 000 light

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years away wandering through

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Interstellar space

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black holes roaming our galaxy are born

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from rare monstrous Stars less than one

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thousandth of the Galaxy's Stellar

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population that are many times more

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massive than our sun these Stars die in

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Supernova explosions their core is

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crushed by the star's own gravity into a

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black hole because the detonation is

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asymmetrical the black hole may get a

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kick sending it careening through our

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galaxy

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Hubble detected the magnified and

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deflected light from a star lined up

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exactly behind the potential black hole

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as its intense gravity warps space

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itself

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the measurements indicate the black hole

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weighs seven solar masses and is

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traveling through space at a hundred

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thousand miles per hour

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but don't worry there's a lot of space