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davieG

Technology, Science and the Environment.

By davieG, in General Chat

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leicsmac

leicsmac

Posted
Posted

https://www.bbc.com/news/science-environment-63617400

 

Barring some kind of drastic situation that forces humanity to drawdown on emissions ASAP, I honestly can't see the overall average temperature increase being kept below 1.5 degrees C.

 

Perhaps keeping it to around or less than 2 degrees C is possible though, and what seems like minor amounts of temperature increase, like the difference between that and 3 degrees C, can be very consequential.

SpacedX

SpacedX

Posted
Posted

So having suffered very minor damage to a band of insulating calking during Hurricane Nicole (by then downgraded to a tropical storm), "The unanimous recommendation" was that they are in a "good position to go ahead and proceed with the launch countdown" of Artemis 1. If all goes according to plan during additional pre-flight checks and the cryogenic fueling process today, the SLS will launch from Launch Pad 39B at 1:04 a.m. EST (0604 GMT) tomorrow - Nov. 16.

leicsmac

leicsmac

Posted
Posted
1 hour ago, Line-X said:

So having suffered very minor damage to a band of insulating calking during Hurricane Nicole (by then downgraded to a tropical storm), "The unanimous recommendation" was that they are in a "good position to go ahead and proceed with the launch countdown" of Artemis 1. If all goes according to plan during additional pre-flight checks and the cryogenic fueling process today, the SLS will launch from Launch Pad 39B at 1:04 a.m. EST (0604 GMT) tomorrow - Nov. 16.

Still right pissed off that I won't be able to watch this live because I'm at work.

SpacedX

SpacedX

Posted
Posted

NASA pulled out the stops today. Wonderful. Orion and IPCS now free-flying. 15 mins to perigee raise manoeuvre ahead of TLI. The latter is a much longer burn than Apollo at 18 minutes. 

stripeyfox

stripeyfox

Posted
Posted

I wish I'd checked this thread last night. I was totally unaware they were going for launch again today.

 

First I knew was when I got a notification from BBC News saying "it has launched".

 

Anyhow, it is good all seems to be so far so good.

 

 

 

SpacedX

SpacedX

Posted
Posted

Those engineers that went into the red zone to tighten the gland packing this morning had balls the size of barrage balloons. I recall reading that the Soviet N1 exploded with a force of 7kt.

Guest worth_the_wait

Guest worth_the_wait

Posted
Posted
8 hours ago, Line-X said:

TLI burn complete. Orion travelling at 21,860mph. Isaac Newton in the driving seat!

One of the most mind-boggling things, is trying to understand the scale of the cosmos.

 

At 21,860 mph it would take about 130,000 years to get to the nearest star in our galaxy.

SpacedX

SpacedX

Posted
Posted
17 minutes ago, worth_the_wait said:

One of the most mind-boggling things, is trying to understand the scale of the cosmos.

 

At 21,860 mph it would take about 130,000 years to get to the nearest star in our galaxy.

I could be pedantic and say that you're wrong given that our own sun is the nearest star in our galaxy - but I knew what you meant :thumbup:.  And said star would be amongst 200 billion in the milky way which is just one of two trillion galaxies. 

 

The most distant manmade object in space, Voyager 1, which began it's journey 45 years, 2 months, 9 days ago has reached a distance of 14,528 billion miles from Earth. It has been contested for years where exactly the solar system ends. General consensus is that this boundary is where the Sun’s gravity no longer dominates which is a point beyond the Oort Cloud. That would place it approximately halfway to the nearest star you referred to, Proxima Centauri. Travelling at only 39,600 miles per hour it will take Voyager I and II nearly 40,000 years to reach this point, by which time they will have journeyed two light years out of the 4.25 light years from earth.

 

The resolution to the Fermi paradox lies in the vast temporal and spatial separation between the occurrence of civilisations/sentient beings. Factor in on top of this, the Great Filter and interstellar colonisation is regarded as an impossibility during the finite evolutionary pathway of a species and the likelihood of extinction. 

Free Falling Foxes

Free Falling Foxes

Posted
Posted
On 18/11/2022 at 14:08, leicsmac said:

https://www.bbc.com/news/science-environment-63677463

 

Well, it's something.

 

In any case, the equation is pretty simple - either pay some now, or pay much more later to a much less forgiving party.

Fast forward a few years and any money going to these developing countries will be misappropriated by corrupt governments and/or criminal gangs.

Just a fraction will go towards what it is intended for is my prediction.

leicsmac

leicsmac

Posted
Posted
3 hours ago, Free Falling Foxes said:

Fast forward a few years and any money going to these developing countries will be misappropriated by corrupt governments and/or criminal gangs.

Just a fraction will go towards what it is intended for is my prediction.

I think that's an extreme probability. However, if it does happen, that is a failure of execution, not intent.

 

The financing and therefore infrastructure to get the developing nations to sidestep coal and oil for energy generation simply has to be given to them despite the above, or inevitably they will contribute to consequences that will hit their own nations first - and hard. Closely followed by everyone else.

SpacedX

SpacedX

Posted
Posted
5 minutes ago, Daggers said:

I have a list of names for who we could fire to the moon first.

Unfortunately Elon Musk already has his name stamped all over the lunar lander. 

leicsmac

leicsmac

Posted
Posted
14 minutes ago, Fazzer 7 said:

https://vm.tiktok.com/ZMFuwh3Jg/

Interesting. A couple of observations:

 

- gas could perhaps be used as a stopgap while the transition to entirely renewable and fission power is made, but it should in no way be considered as a long term option, it still contributes copious emissions we cannot afford.

 

- processing oil into plastics and other products is something that we're going to have to live with, dealing with plastic pollution aside. All the more reason, given its cost, to cease it as a method of power generation ASAP.

 

- carbon capture is a part of the solution, but drawing back on emissions has to be the main course or we're just kicking the can down the road.

 

- Tiktok videos, even with people who seem like they know what they're talking about (and even if they do know what they've talking about) aren't really a valid form of science communication without legit articles, scientific and otherwise, backing them up. Please don't be conned into thinking they are just bevause they might satisfy your confirmation bias about the status quo and lack of regard for the future.

SpacedX

SpacedX

Posted
Posted
19 hours ago, leicsmac said:

In other news, Artemis 1 about to enter Moon orbit!

And Borman, Anders and Lovell, the crew of Apollo 8 are all alive to see it!

 

 

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