Black hole evidence in the centre of our galaxy

Stars far away even less than 6 light-hour from the Milkyway turn around something invisible. - Ascolta l'intervista su www.moebiusonline.eu con una ricercatrice che ha collaborato a scoprirlo.
Credits: ESO, European Organisation for Astronomical Research in the Southern Emisphere.

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• hole
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• nero
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• lattea
• milkyway
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• centro
• galassia
• galaxy
• centre

[MemiLeigh]

I'm assuming that they're attempting to track the elliptical orbits to pin point where the black hole is... So where exactly is it? I mean you don't give any info on that.

[moebiusonline]

You're right. The presence of the black hole is guessed from the motion of the stars around.

[spacecoke]

T2theH 

they don't assume.. they study they research and they calculate.

[KibbyCC]

Of course we are in it's gravitational field... why do you think our Sun orbits it, albeit far out.

If the sun were free of it's gravitational pull we'd fling off out of the Galaxy.

That said we're 27,000 LYs from it's event horizon, so don't expect to be gobbled up for billions upon billions of years if ever.

[nicholaswright2006]

@MemiLeigh According to the video here, the lack hole is "guessed to be" exactly where the crosshairs lie in the middle of the screen.

[henrikmk]

@Karionfabe1 When doing calculations, based on observations of those stars, they can only orbit that way and at those speeds in the presence of an object with around 4.1 million solar masses.

The innermost star gets as close as 17 light hours from the object, moving at around 2% of the speed of light and is not torn apart. That indicates that the object is quite small with an extremely large mass.

This means, the object can only be a black hole.

[shakenbake147]

The comments here depress me

[yourmajezty]

this is bullshit

[Karionfabe1]

Black holes are theories, people should understand that and this is hardly evidence but it's really really interesting

[megamilmil]

This is very interesting, but the only "proof", right?

[coldarc]

everybody knows when you move further away from the sun the weaker the effect of gravity. when you have a planet with its own gavitational field the local effect of that gravity cancels out the weak gravitational effect from the sun. that locally overpower the sun´s gravity. if you spin a flywheel give it lots of speed its force increase propotional to the increase in conserved energy. gravity from a planet behave in a very simmilar manner. instead of mass it use waves of energy from ionisation.

[coldarc]

its somthing you guys have to get in to your heads. when a planet move around a stars time is slowed down on the star and go faster on the planet. that means the time the planet use to move in distance is shorter on the star than it is if you stand on the planet. observing one orbit one year from earth is not one year in one orbit if you stand on the sun. here is the interesting part, when you stand on earth you dont experience time dilation from the sun. for the sun earth is antigravity.

[TubeYouGuru]

@MemiLeigh you cannot actually see a black hole. That would in theory, be impossible. Because as light itself, cannot escape, there would be nothing emitting or reflecting for you to see... Rather you can only observer the the effects it has on it surroundings., which this video is showing

[poweressen]

@JumpstyleDaniel Currently that "black hole" is spreading his energy and giving us the opportunity to live and think by keeping us away from the deep abyss.