lirik lagu kids learning tube - supermassive black hole
[chorus]
i’m a supermassive black hole
found in the center of almost all massive galaxies
i’m a supermassive black hole
there are theories on how i’m formed
come and join me and see
[verse 1]
there are three types of black holes according to theory
primordial, stellar, and supermassive like me
the primordial is a tiny, hypothetical black hole
in 1974, stephen hawking theorized its role
primordials were formed in the еarly universe
but we’ll lеarn about this more when i teach that topic’s course
onto the most common type called the stellar black hole
but let’s first see why a star exists before it loses control
the pressure from nuclear fuel in the core pushes outward so greatly
while the force of equal power pushing in is caused by gravity
this equal power does create the star’s main sequence stage
this means the star is stable in its present burning age
when stars with your sun’s mass run out of nuclear fuel in its core
it becomes a red giant then quietly becomes a white dwarf
but when stars with 25x the mass of your solar system’s sun
run out of nuclear fuel, its gravity pushes the core and it becomes
a stellar black hole, the most common type in the universe
after the chorus, i’ll tell you how i’m created of course
[chorus]
i’m a supermassive black hole
found in the center of almost all massive galaxies
i’m a supermassive black hole
there are theories on how i’m formed
come and join me and see
[verse 2]
i’m a supermassive black hole, the third type of black hole seen
believed to be found in the center of any major galaxy
a black hole’s a region of sp~ce where the force of gravity’s so strong
that nothing, not even light, can escape. you’ve learned this in this song
how i acquired my mass is still yet to be determined
and astronomers are still working on how i’m formed uncertain
some think i’m formed from the collapsing massive clouds of gas
during the early stages of formation of galaxies with mass
my parts start with the accretion disc orbiting around me
its superheated dust and gas swirling around the singularity
the singularity’s the very center of a black hole, you see
made up of matter collapsed into a region of infinite density
the event horizon’s the radius of a singularity
where energy and matter cannot escape the black hole’s gravity
the innermost stable orbit’s the last place material orbits safely
without the risk of falling past the point and no return in me
a photon sphere’s a location where gravity is so strong
that light can travel in circles, and orbiting the black hole are photons
i feed on stars, dust, and gas, and produce jets of light speed blasting particles
of radiation up from my poles as you can see
these are relativistic jets and my last part i’ll talk about
now it’s time to sing with me, do it loud without any doubt
[chorus]
i’m a supermassive black hole
found in the center of almost all massive galaxies
i’m a supermassive black hole
there are theories on how i’m formed
come and join me and see
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