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The Earth Will be Destroyed by the Sun Going Supernova (Original Post) Skraxx Jul 2020 OP
Sometimes I think that couldn't happen soon enough. PoindexterOglethorpe Jul 2020 #1
Sun's not big enough to go supernova... Foolacious Jul 2020 #2
It Will Always Be Super To Me! Skraxx Jul 2020 #6
Awwwww... :-) Foolacious Jul 2020 #15
And it WILL be the heat...so nanny-nanny-boo-boo haters! (SARCASM, necessary?) n/t Moostache Jul 2020 #3
At least it will be a dry heat. nt Laffy Kat Jul 2020 #4
Good one yonder Jul 2020 #10
Nova, Not Supernova ProfessorGAC Jul 2020 #5
It Will Always Be Super To Me! Skraxx Jul 2020 #7
Nicely Done! ProfessorGAC Jul 2020 #8
The Sun is not a big enough sequence star to go supernova. Blue_true Jul 2020 #9
That should take care of the Helium shortage problem. yonder Jul 2020 #12
I guess. Blue_true Jul 2020 #13
Kinda like the idea of being as iconic as T-Rex, et al... Backseat Driver Jul 2020 #11
And here we are worried about silly stuff like pandemics and an idiot as president. KY_EnviroGuy Jul 2020 #14
Possibly, our planetary neighbor Venus was the victim of increased solar heat. John1956PA Jul 2020 #16

Foolacious

(497 posts)
2. Sun's not big enough to go supernova...
Sun Jul 19, 2020, 12:47 PM
Jul 2020

we'll have to be satisfied with a plain old garden-variety nova...

ProfessorGAC

(65,010 posts)
5. Nova, Not Supernova
Sun Jul 19, 2020, 01:19 PM
Jul 2020

Would have to be around 10x larger (8-15 is the estimated range) for a star to go supernova.
But, your point is well taken.

Blue_true

(31,261 posts)
9. The Sun is not a big enough sequence star to go supernova.
Sun Jul 19, 2020, 01:36 PM
Jul 2020

It will destroy the Earth in around 6 billion years though. The way it will happen is through completion of Hydrogen fusion. Helium will begin to fuse in massive quantities and the Sun will start to swell over the 93 million miles between it and Earth. As Helium fusion gives way to fusion of larger elements, the Sun will complete the process of destroying Earth by consuming it. Many billions years after Earth is gone, the Sun will shrink, cool and for many billions of years become a white dwarf until everything in the Milky Way Galaxy is consumed by the end cycle of Sag A.

Backseat Driver

(4,392 posts)
11. Kinda like the idea of being as iconic as T-Rex, et al...
Sun Jul 19, 2020, 01:55 PM
Jul 2020

but my human species energy will be converted infinitely sooner, LOL!

John1956PA

(2,654 posts)
16. Possibly, our planetary neighbor Venus was the victim of increased solar heat.
Sun Jul 19, 2020, 02:17 PM
Jul 2020

From https://www.space.com/venus-runaway-greenhouse-effect-earth-next.html :



How Venus Turned Into Hell, and How the Earth Is Next
By Paul Sutter August 07, 2019

Earth is pretty nice. but it won't stay that way.

. . .

But four and a half billion years ago, our sun was different. It was smaller and dimmer. As stars like our sun age, they steadily grow brighter. So back then Venus was firmly planted in the habitable zone, the region of the solar system that can support liquid water on the surface of a planet without it being too hot or too cold.

But as the sun aged, that habitable zone steadily moved outward. And as Venus approached the inner edge of that zone, things started to go haywire.

As the temperatures rose on Venus, the oceans began to evaporate, dumping a lot of water vapor into the atmosphere. This water vapor was very good at trapping heat, which further increased the surface temperatures, which caused the oceans to evaporate even more, which caused even more water vapor to get in the atmosphere, which trapped even more heat, and so on and so on as things spiraled out of control.

Eventually, Venus became a runaway greenhouse with all the water dumped into the atmosphere trapping as much heat as possible, with the surface temperatures continuing to skyrocket.

. . .

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