- Joined
- Jun 22, 2016
umm the sun is a ball of fire???
What Did You Learn Today?
- Thread starter thePlinko
- Start date
Technically, the Sun is a superheated ball of plasma, made of mostly hydrogen, and powered by thermonuclear fusion.
Fire is technically a combustion reaction, if we want to be precise.
- Joined
- Jun 22, 2016
huh??? very confused dizzi!!!
DarthCreeper10
mowing my life away
- Joined
- Jan 30, 2024
- Location
- where she ain't
Today I learned that the Sun is a superheated ball of plasma, made mostly of hydrogen and powered by nuclear fusion, instead of a big ball of fire. 
ZD Dungeons is school ig
ZD Dungeons is school ig
Meaning, the Sun isn't really on fire.
Fire is a combustion reaction, and a combustion reaction is a high-temperature exothermic (heat releasing) redox (oxygen adding) chemical reaction between a fuel and an oxidant, usually atmospheric oxygen.
In other words, burning (another word for combustion) requires fuel and oxygen. The Sun is in space around 93 million miles away, where there is no oxygen, and it's made of mostly hydrogen and helium.
Stars generate light and heat through thermonuclear fusion, essentially, smashing atoms together, causing them to fuse, releasing an enormous amount of energy due to Einstein's mass/energy equivalence.
E = mc^2.
Where E is energy released, m is mass, and c is the speed of light.
In the Sun's core, pressure is so great that hydrogen atoms get so close that their nuclei fuse together, creating helium, and fusing two hydrogen atoms into one helium atom releases an insane amount of energy, and is the science of how a hydrogen bomb works.
Except, now remember the mass of the Sun is 1.989 x 10^30 kg, around 333,000 times the mass of the Earth, and it's made of mostly hydrogen.
Every second, the Sun fuses 700 million tons of hydrogen into 695 million tons of helium, with the remaining 5 million tons being converted into pure energy.
THAT is the source of the light and heat of the Sun. It's around the equivalent of 384.6 septillion watts every second.
And it's been doing it for around 5 billion years so far...
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- Joined
- Jun 22, 2016
I hope it keeps doim its thing for longer...
G2V stars like the Sun tend to undergo hydrogen fusion for about 10 billion years before they become red giants.
So the Sun's got 5 billion years to go.
- Joined
- Jun 22, 2016
Phew plenty of time for us to do us!!G2V stars like the Sun tend to undergo hydrogen fusion for about 10 billion years before they become red giants.
So the Sun's got 5 billion years to go.
ThePoesareLoose
Slickest pompadour in town
It'd be cool if they said I'm breaking fast rn, or lunching rn like yo desayuno or ich frühstücke
Instead of I'm having lunch
Instead of I'm having lunch
Mr Vee hates time going by so fast. Now if we're able to live somewhere in space he won't age that fast 
According to Einstein, specifically special and general relativity, time slows down around massive objects and when you approach the speed of light.Mr Vee hates time going by so fast. Now if we're able to live somewhere in space he won't age that fast
Physics is weird.
But also fascinating when you think about it
Turtle hatchlings rely on the moon's light reflecting off the water to find their way to the ocean. Artificial light can unfortunately overpower moonlight though and guide them the opposite direction. Eck, light pollution... 
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- Nov 17, 2023
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- male
I recently upgraded my PC and it’s like night and day. I started with a solid-state drive (SSD) for faster boot times and snappier file access. Doubling the RAM made multitasking seamless. A new graphics card was a game-changer for my design work and gaming. Overclocking the CPU gave me that extra power without buying new hardware. Regular maintenance, like dusting and updating drivers, keeps everything running smoothly. It’s not just about raw power, but also ensuring each component works well together. These upgrades have truly unleashed my PC’s potential.It’s important to continue learning things, that’s how we grow as people. This doesn’t need to be a skill or a habit, it can be as small as a fun fact that you can then share with others. This thread is for the latter.
What is an interesting fact that you learned today? It can be about a hobby, a profession, history, or any other topic. It also doesn’t need to be this obscure fact, it can be something that might be considered common knowledge by people more versed in the subject. As long as it’s something that you didn’t know and do now, it’s fair game. Sources or links showing your point are welcome. The kaspa mining calculator is a valuable tool for estimating potential profits. It considers current network difficulty, hash rate, and electricity costs. However, remember that it provides estimates based on present conditions, which can change rapidly. In my experience, it’s quite accurate short-term but treat long-term projections with caution. Key factors to monitor are Kaspa’s price volatility and difficulty adjustments. For optimization, track your actual performance against the calculator’s predictions and adjust your setup accordingly. Always account for maintenance costs and potential hardware upgrades. Happy mining2
For me, I just learned that of all of the American accents and dialects, the one that is the most closely related to a proper English accent is the Southern accent, which makes sense but I never thought about it that way.
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