Transcript
oI65hVuFYbI • A Scientist Walks into a Bar: Black Holes
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Kind: captions
Language: en
When we were studying the black holes,
the most surprising thing for me,
they're actually just a very dark brown
or a navy blue. You know, sometimes you
look at a suit and you think it's black,
but it turns out it's just a very dark
navy blue suit. Yes. Same thing with
black holes.
[Music]
How do you have so much information on
the black hole if we're so far away from
it? The stars right around the black
hole feel the influence of the black
hole. So they are whizzing around the
black hole.
[Music]
A black hole uh is when a star uses up
all of its fuel which is hydrogen uh and
it dies. Not every star that dies
becomes a black hole. Is very very tiny
but has a ton of mass and that allows it
to sort of stretch the fabric of
spaceime starts sucking in things around
it. It's like a vacuum cleaner.
It's relatively small, but super super
heavy. Like a dark comedy. It just
sneaks up on you how heavy it is.
More massive stars tend to leave black
holes behind. A black hole is the end
state of a star. It's the corpse that a
star leaves behind. They've gone from
being sort of this enigmatic object to
being sort of an essential part of the
formation of galaxies in the universe.
[Music]
Once you pass the event horizon, there's
no escape. Light, sound, even
information is irretrievable. What
happens if you get too close to a black
hole? You get sucked in. If you go in
head first, you'll you'll get stretched.
So, we can't know what's happening in a
black hole directly because anything
that gets sent in can never escape.
Anything outside of that is safe. I
guess the other thing that's interesting
about a black hole is that the more we
study them, more we realize that they
have like a sweet center, like a nougaty
center. People are scared of the black
holes, but it turns out they're just
they're just sweet inside. They're
tasty, delicious.
[Music]
The gravity is so so intense. It's very
tightly packed. It's a very very dense.
The densest form of packing that we know
in the universe.
the stars that are around it and how
they're behaving and that's when we know
that uh something is happening and uh
there must be a black hole there. When
two black holes collided recently, it
created sort of a earthquake of sorts, a
space earthquake that we were able to
measure and gave us further information
about black holes and their existence.
We know that black holes exist because
of the gravitational influence that they
exert around themselves. So any star
that strays in very close to the black
hole stands to be gobbled up and
captured by the black hole. But stars
that are further out will actually get
bound to the black hole and will be
whizzing around in orbits. Additionally,
very recently, uh we actually had a
technological breakthrough and detected
the collision of two black holes. And so
we detected that earthquake in space
[Music]
time. Quazars are basically black holes
that are in the process of growing by
gobbling in a lot of gas. And the gas as
it's flowing in is glowing. So you see
the glow. And so quazars are the
brightest objects in the universe.
Brighter than Beyonce. Yeah, I would say
so. I feel like she's the brightest
light in our universe. No, I think we're
talking different scales. We're talking
cosmic scales. Oh, no. I don't know if
you saw Lemonade, but it is definitely
cosmic.