If you think about it, our planets were made from the ashes of a nebula, which is a dead star. But that took hundreds of years. Will our sun burn out too, or do I just need to find a hobby?
our sun has already kaboomed once, that’s why we have heavy elements that are only made in nova
That’s not quite right. Our sun has never gone nova, and is a fairly young main sequence star. It’s still in the first “main sequence” of fusion after accumulating from scattered matter. It’s heavy enough to do fusion, but not heavy enough to really “properly” go boom at the end (or to have done so in the past).
While novas form heavy elements, the originating star either becomes a neutron star or black hole. Sol, our sun, is a a “normal” star (though above average brightness) which means it won’t properly go nova. It’ll just “burn out” and become a white dwarf.
The matter ejected by a Nova flies out into the universe and falls in the gravity wells of other Solar systems. So our heavy elements likely hail from millions of other past stars.
Those elements are from the progenitor stars that formed the nebula that our sun formed from. Our star has never gone nova and never will.
You should find a new hobby like googling because it would tell you the sun will burn out in ~5 billion years
Questions are a good thing and preferring to get answers from humans instead of machines is a good instinct. Less harshness and more humanity makes the fediverse a better place.
The correct thing would have been to look it up and share the information with the fediverse, this is a basic fact question not a matter of opinion or discussion
This is just pure laziness.
I agree with the sentiment OP should have just googled this, but we dont know who this person is. what if they are a child? Who says basic questions arent allowed? am I missing something?
I’m neutral on this kind of question, I just don’t answer in the hopes someone else does and just move on
If they’re a child all the more reason for everyone to tell them to google stuff
The sun will turn into a red giant, then into a white dwarf surrounded by a planetary nebula. This will take billions of years. The white dwarf is basically the ash of a star. It’s a hot glowing remnant that no longer has nuclear fusion and so it’ll just glow for trillions of years slowly losing heat and light until it becomes a cold lump of carbon. The inner solar system will most likely be wiped out during the red giant phase as the sun will expand tremendously in size eventually reaching somewhere between earth and mars’ orbit.
Fun fact, while the earth will almost certainly be engulfed by the red giant phase of our sun, it will not be immediately consumed. A floating lump of rock will exist and continue to orbit the center of mass for millions of years inside the sun.
A problem i see with your theory is that the outer layers of the sun are plenty hot enough to melt rock and as soon as that happens the rock is probably just going to become part of the plasma making up the sun’s atmosphere.
That’s only true to the current outer layer of the sun.
Now consider that the sun will expand from its current ~1.4Mkm diameter to anywhere between 1.2 to 2 AU (1 AU being the distance between the sun and the Earth on average, so about 150Mkm). That’s a 200 times increase in radius/diameter, resulting in a drop of the surface temperature to around 2400K, which, while isn’t ideal for life (and in fact arguably the coronal plasma itself would be a bigger issue for life et al), is also not something the planet couldn’t withstand for a good while. After all we’re talking about a measly 2000 degrees Celsius or so.
Yes, but humanity likely won’t be around to see it. It’s a ways off.
thanks for responding so quickly y’all ( n U n )
Of course, the sun isn’t special. We have about 5 billion more years.
*5 billion
Ok?
You wrote million instead of billion.
I mean, I didn’t. It say 5 billions and the comment is un-edited. But thanks?
Wow, really strange. On my instance it shows millions and edited 10 seconds after it was posted. Maybe something wrong with the federation.
You’re probably right, it is absolutely the kind of typo I’d make and then fix immediately. But then why doesn’t it show up as edited for me?
Oh nooooo I’m not prepared please no
With humans barely reacting to climate change, it will be quite a comedy when the sun starts expanding.
This is fine
One proposal suggests that the universe will entirely run down eventually. In many billions of years It will become a cold empty featureless vacuum.
Billions? No. Try a googol (10100) or more years. The most massive galactic black holes will take at least that long to evaporate.
Yes, the sun will burn out next week, actually. Bring a coat.
You might want to sit down for this, but the sun is also a star. We’re just really really close to it.
Yes, I know.
