How does gravity escape a black hole?

If nothing gets out of a black hole, how does gravity do it? Something with virtual gravitons? Is this really necessary? It's tricky question, but this is what I can say without resorting to equations.

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#science #physics #blackholes

[Krmpfpks]

I love Sabine’s videos. However in recent times they seem to always end the moment they get interesting. I would love to have longer videos again.

[arctic_haze]

I recently started to doubt the existence of gravitons. In General Relativity, gravity is not even a force. So why would it be a force in particle physics? So if graviton exist, it is most probably in the same sense as phonons (quanta of sound): a useful mathematical device but not a real particle

[henrurust]

An old adage about chocolate. Coffee makes getting up possible but chocolate makes it worthwhile.

[retiefgregorovich]

Every time i see a video on gravity I come away with the same feeling; no one really knows what gravity is and how it really works.

[johnfranks]

What baffles me is the following - Why is it always postulated that an outside observer, say sitting on earth seeing someone falling into a black hole becoming frozen at the event horizon, but when a another perhaps smaller black hole or neutron star falls into and combines with a black hole and it therefore behaves as all masses following an ever decreasing faster and faster orbit before joining with the first black hole. Why do we measure through LIGO a rapid chirp not a long drawn out seemingly frozen endless time period of a series of ultra long and endlessly slow gravity wave pulses? It seems to me that gravity does not play by the same rules somehow!

[GeoffryGifari]

I and some others have asked a similar question on the hypothetical charged black hole: how does the electric field get out of the horizon?

[henrurust]

I wonder if the reason I remember my wife's birthday after 40 plus years is because I do the taxes.

[kensmith]

I remember the lecture about spinning blackholes. Just before the lunch break, the prof said that a spinning blackhole has a singularity that looks like a donut. I don't remember anything after that.

[Antoniog]

Gravity is the curvature of the space-time?

If it is, can gravity "travel" faster than light speed?
(Just like the space-time it self expanded faster than light at the early age of the universe)
Thank you

[Lucas.boninsegna]

I love the fact that Sabine doesnt seem to get excited about physics because its beautiful, but instead because it's mind blowing.

[andrewsuryali]

Around the 4th minute I suddenly remembered Sabine is married. Now I worry for Mr. Hosenfelder...

[UplandJones]

I asked Brian Greene this very question many years ago. He said it was due to “virtual gravity”, but it was too complicated to explain without at least a master’s degree understanding of physics, so he doesn’t know either.

[seanmcghee]

I love Sabine. "No amount of chocolate with get you out of it"

Great timing and perfect deadman. AND she's a great scientist

[ClodODirt]

I haven't even watched the video yet, I just clicked on it so I could comment that the question is so brilliant, I wonder why I never thought of it before...

[greganderson]

Thanks! That clarifies pretty much all the questions I had about how gravity works, near black holes and otherwise.

[annecarter]

Sabine: I signed up for Brilliant using your link (last night) and LOVE it!!!! I started with algebra because I’ve always been math-phobic. So far I’m acing all the lessons & hated turning it off! Don’t ask my age; soon I’ll be measuring it in light years!!!!
Many thanks for your videos!!

[Shin_mid]

Whatever happened to the paper that suggested that a black holes vacuum energy causes the expansion of space around it?

On another note, It's so fascinating that Einstein's theory of general relativity basically implies that black holes are one-way portals to the end of the universe

[Musixme-Accompaniments]

I've never been convinced about "gravitons". I think they are as practical as String Theory. Crunch the numbers all you want, it does not exist.

[lcgmilllz]

Love how quirky and educational your videos are. Reminds me of the cool teachers from school that genuinely loved teaching others about their favorite subject. Followed and will be back again

[samedwards]

Thanks so much for creating and sharing this informative video. Great job. Keep it up.