Black Hole Topic
Posted: Thu Apr 06, 2017 2:49 am
Black holes are formed two ways:
Massive stars dying, and 2 neutron stars merging.
For massive stars dying, they spend most of their lives fusing hydrogen into helium. This creates a tremendous amount of energy. Our yellow dwarf star (known by its more boring name, the sun) converts 600 million tonnes of hydrogen into helium. A star is balanced between the radiation it emits and gravity. With stars with much more mass than our sun, the temperature and pressure allows them to fuse helium into lithium, fusing it into carbon, oxygen, neon, silicon and then iron. Iron cannot fuse into another element, and so iron builds in the core until it hits a critical amount. The radiation to gravity is broken, the core collapses and then the star dies in a super/hypernova explosion. This leaves a neutron star (will be done in another thread) or if the star is large enough, the core collapses on itself into a black hole. If you looked at it, you would not be seeing the black hole, but the event horizon. Anything that crosses, needs it's speed to bypass c (300,000,000 km/h) which is impossible under the laws of physics. The event horizon is completely black, so you do not see anything. If that's the black, what's the "hole" part?
The singularity.
Neutron stars merging, this doesn't just happen after midnight, they merge over millions of years and then release a gamma ray when they merge, and then fall under their own gravity.
(Credits to Kurzgesagt – In a Nutshell and Wikipedia for the info)
Coin (spoilers)
Massive stars dying, and 2 neutron stars merging.
For massive stars dying, they spend most of their lives fusing hydrogen into helium. This creates a tremendous amount of energy. Our yellow dwarf star (known by its more boring name, the sun) converts 600 million tonnes of hydrogen into helium. A star is balanced between the radiation it emits and gravity. With stars with much more mass than our sun, the temperature and pressure allows them to fuse helium into lithium, fusing it into carbon, oxygen, neon, silicon and then iron. Iron cannot fuse into another element, and so iron builds in the core until it hits a critical amount. The radiation to gravity is broken, the core collapses and then the star dies in a super/hypernova explosion. This leaves a neutron star (will be done in another thread) or if the star is large enough, the core collapses on itself into a black hole. If you looked at it, you would not be seeing the black hole, but the event horizon. Anything that crosses, needs it's speed to bypass c (300,000,000 km/h) which is impossible under the laws of physics. The event horizon is completely black, so you do not see anything. If that's the black, what's the "hole" part?
The singularity.
Neutron stars merging, this doesn't just happen after midnight, they merge over millions of years and then release a gamma ray when they merge, and then fall under their own gravity.
(Credits to Kurzgesagt – In a Nutshell and Wikipedia for the info)
Coin (spoilers)
Spoiler: show
