Could humans survive on earth without the sun?

OK, just for grins...

Let's say we have time to make actual working fusion reactors.

At that point, our underground caverns could be lit by "grow lights".
https://en.wikipedia.org/wiki/Grow_light

There are various groups working on vegetables that grow 24 hours per day.

Some European countries have extensive greenhouses for full scale production of food crops.

 

In addition to heat, the sun also is crucial in keeping our planet in orbit. If it sun vanished or died out, the Earth would be in an unsustainable orbit.

The sun's gravity keeps us in proper orbit.

 

Yes. This planet, the other planets, the asteroids, etc., would just be cruising through space as a cluster of objects. We would keep our moon, unless the event that caused the sun to "go away" also got rid of our moon. Depending on that event, our path might be affected by the gravity of other planets - and maybe eventually collide with those planets.

I think that is part of the premise.

In real life, I'm pretty sure that anything that would separate the sun and earth would also eliminate humans on earth just from the event. But, this is for grins, right?

 

When you come and say It was debunked that does not make it debunked.

When then Cosmo comes and says It was debunked that does not make It debunked.

When then rahl comes and says It was debunked that does not make It debunked.

That only makes It to be a hard fact, the truth contradicting your common religious belief.

Truth cannot be offended; you don’t know that because you live by lies.

 

Well, I'll play ball on this. I do think a human population could survive without the sun for a long time. It would be depressing as hell. Like living in the south side of Chicago or East Dubuque.

 

I think it would be way worse than that - more like a federal penitentiary without any windows.

And, we'd need decades to prepare even to save a few.

 

Placing a couple of humans on Mars is a much easier task than tunneling deep into Earth yet we're still not on Mars. Building domed cities is actually easier than tunneling. And even in wild speculations here, only a few of the 7+ billion (today) could ever live underground...7+ billion will parish...

 

Well, I do agree with your death toll in any realistic scenario involving the absence of our sun.

I would say there isn't a station on mars because there hasn't been an adequate justification for the expenditure.

Of course, we added $1.5T to the national debt just to reward the wealthy for being so gosh darn wealthy. So, I'm certainly not suggesting we're as rational as that statement sounds.

 

Whether it's colonizing Mars, or the Moon, or tunneling deep underground, they will only be a solution for a few humans. If only more people understood how important it is to take care of the Earth we have today.

No station on Mars because of $$ which will be the same problem with tunneling or any other multi-national effort. We have some money in the private sector but very little in the government sectors so I don't see government doing much.

Ref. tax policy and not to get off topic...but...how is it possible to reduce tax revenues when we have constant deficit spending and mounting debt? If deficit spending and debt is no big deal then give NASA $200 billion instead of $18 billion...

 

Absolutely. If we F Earth, things could get really bad.

Yes - the tax logic used in this last go-around was absurd. Speed up the economy? Giving money to the wealthy doesn't speed the economy (see Kansas) and our economy was growing fast enough that the FED put on the breaks in 2015 by raising interest rates. We just added $1.5T to the debt, and even that accounting was based on a claim that the bill would pay off the rest of the cost of the bill in economic growth. But, we're already growing fast enough that the FED considers SLOWING growth!

So, the accounting is worse than even the $1.5T sounds!

 

Growing population, consumption of natural resources, pollution of oceans and lakes and atmosphere, sabre-rattling nukes, etc., no matter how you chart these does not lead to a good place. If there are ET's they have probably vanished due to ignoring these types of issues, or, if they found a way to find consensus among their planet population, and took proactive actions, perhaps they're still around. The only variable for us is how much pain we must endure as we scramble to deal with our failures.

Tax question; why was it necessary to give wealthy people a tax reduction?

 

We gave wealthy people a huge tax break because that's what they wanted and our congress couldn't resist.

There isn't any other answer that is even slightly rational.

 

I guess while we abuse Earth we might as well spend...spend...spend!

 

or the moon and stars?