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I would love to have a sense of scale... How high are these 'cliffs'? Knee high?

Of course on a comet, gravity would be so light you easily might be able to bound from bottom to top even if they're as high as the Grand Canyon. You might even jump off altogether.

Your video, A rare view of the surface of a comet, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

Your video, Time Lapse of Comet Neowise - July 11, 2020, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

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Interesting info, but whoever produced the video made some really questionable editorial decisions. Commas separated values over 1000, except for periods used in #1. What's with the "big stuff" in the background? How do the heights of various buildings compared to things like mountains and the size of Halley's comet relate to these mortality figures?

Just... weird. Good video though, in spite of that

@bcglorf Here's a tome for you....


It's certainly not (the only way). Converting to green energy sources stimulates the economy, it doesn't bankrupt it, and it makes it more efficient in the future thanks to lower energy costs. My solar system paid for itself in 8 years, giving me an expected 12 years of free electricity and hot water. Right wingers would tell you it will never pay for itself....utter bullshit.

Every gap in our knowledge I've ever seen that we have filled with data has made the estimates worse. Every one. Every IPCC report has raised the severity and shrunk the timeframe from the last report....but you stand on the last one that they admit was optimistic and incomplete by miles as if it's the final word and a gold standard. It just isn't. They themselves admit this.

The odds of catastrophic climate change is 100% in the next 0 years for many who have already died or been displaced by rising seas or famine or disease or lack of water or...... and that goes for all humanity in the next 50 because those who survive displacement will be refugees on the rest's doorsteps. Don't be ridiculous. If we found an asteroid guaranteed to hit in the next 50-100 years, and any possible solutions take a minimum of 50 years to implement with no surprises, and only then assuming we solve the myriad of technical issues we haven't solved in the last 100 years of trying and only if we can put the resources needed into a solution, not considering the constantly worsening barrage of smaller asteroids and the effects on resources and civilisation, we would put all our resources into solutions. That's where I think we are, except we still have many claiming there's no asteroid coming and those that already hit are fake news....including those in the highest offices making the decisions.

Every IPCC report has vastly underestimated their projections, they tell you they are doing it, only including data they are certain of, not new measurements or functions. They do not fill in the gaps, they leave them empty. Gaps like methane melt that could soon be more of a factor than human CO2, and 100% out of our control.

The AR5 report is so terrible, it was lambasted from day one as being incredibly naive and optimistic, and for not including what was then new data. Since its release, those complaints have been proven to be correct, in 5 years since its release ice melt rates have accelerated 60 years by their model. I wouldn't put a whit of confidence in it, it was terrible then, near criminally bad today. I'll take NOAA's estimates based on much newer science and guess that they, like nearly all others in the past, also don't know everything and are also likely underestimating wildly. Even the IPCC AR5 report includes the possibility of 3 ft rise by 2100 under their worst case (raised another 10% in this 2019 report, and expected to rise again by 2021, their next report), and their worst case models show less heat and melting than we are measuring already and doesn't include natural feedbacks because they can't model them accurately yet so just left them out (but noted they will have a large effect, but it's not quantitative yet so not included). Long and short, their worst case scenario is likely optimistic as reality already outpaces their worst case models.

Again, the economy benefits from new energy production in multiple ways. Exxon is not the global economy.

It took 100 years for the impact of our pollution to be felt by most (some still ignore it today). Even the short term features like methane take 25+ years to run their cycles, so what we do today takes that long to start working.

If people continue to drag their feet and challenge the science with supposition, insisting the best case scenario of optimistic studies are the worst we should plan for, we're doomed....and what they're doing is actually worse than that. The power plants built or under construction today put us much higher than 1.5 degree rise by 2100 with their expected emissions without ever building 1 more, and we're building more. Without fantastic scientific breakthroughs that may never come, breakthroughs your plan relies on for our survival, what we've already built puts us beyond the IPCC worst case in their operational lifetimes.

There's a problem with that...I'm good with using real science to identify them without political obstruction and confusion, the difference being we need to be prepared for decisive action once they're identified. So far, we have plans to develop those actions, but that's it. In the event of a "surprise" asteroid, we're done. We just hope they're rare.
This one, however, is an asteroid that is guaranteed to hit if we do nothing, some say hit in 30 years, some say 80. Only morons say it won't hit at all, do nothing.
Climate change is an asteroid/comet in our orbit that WILL hit earth. We are already being hit by ejecta from it's coma causing disasters for millions. You suggest we don't start building a defense until we are certain of it's exact tonnage and the date it will crash to earth because it's expensive and our data incomplete. That plan leaves us too late to change the trajectory. The IPCC said we need to deploy our system in 8-10 years to have a 30-60% chance of changing the trajectory under perfect conditions....you seem to say "wait, that's expensive, let's give it some time and ignore that deadline". I say even just a continent killer is bad enough to do whatever it takes to stop, because it's cheaper with less loss of life and infinitely less suffering than a 'wait and see exactly when it will kill us, we might have space elevators in 10 years so it might only kill 1/2 of us and the rest might survive that cometary winter in space (yes at exponentially higher cost and loss of life and ecology than developing the system today, but that won't be on my dime so Fuck it).' attitude.

BOSE? Bose-Einstein condensate

https://www.jpl.nasa.gov/edu/news/2016/7/27/they-really-do-exist-nasas-ghostbusters/

In a team of professional ghost busters, Anita Sengupta would most certainly be the enthusiastic and multi-talented leader. She’s already taken on roles developing launch vehicles, the parachute that famously helped land the Mars rover Curiosity, and deep-space propulsion systems for missions to comets and asteroids.


Sengupta and other members of the entry, descent and landing team for NASA's Mars rover Curiosity discuss the nail-biting details of the August 2012 landing.

Most recently, she’s carved out a niche as the project manager for an atomic physics mission, called the Cold Atom Laboratory, or CAL.

Since the mission was proposed in 2012, Sengupta has been leading a team of engineers and atomic physicists in developing an instrument that can see the unseen. Their mission is to create an ultra-cold quantum gas called a Bose-Einstein condensate, which is a state of matter that forms only at just above absolute zero. At such low temperatures, matter takes on unique properties that seemingly defy the laws of thermodynamics.

Just..so..bad. Why is it so hard to write a good script? A story board? A director who has seen a movie or two? Lets CinimaSins this bitch;

1. opening shot is two shots at very wrong focal lengths, or that hole is actually very small.

2. One would think pre rendered special effects would not have issues with limited fill rates, but this comet clearly looks like its using a smoke trail from a video game on minimum graphic settings. You can count the number of particles on one hand.

3. For a desert nomad in a sand storm, she has an amazingly clean face, also, hoods that pull forward?

4. nomad is pointing at the clear as day impact landing of meteor as if it NEEDED to be pointed out.

5. a fairly large amount of simulated camera shake despite flames being so thin they don't smoke.

6. A horribly done transition shot where the boy is surrounded by smoke, fire, and lava, all except in the direction the camera is pointing.

7. Large tank army that no one notices until it passes them.

8. Physics, or lack of. the entire scene. Those 2 bypeds look like they were motioned captured by a two year old playing with his toys.

9. The expression on the boys face of surprise makes no sense for a robot of some sort who has crashed to the surface of a planet of which he had full intention of kicking ass in. The scowl afterwards makes it even more awkward.

10. what then proceeds is what can best be described as live gameplay from a random indie game from the steam store that utilizes a mostly black color pallet to hide the fact that nothing is texture mapped, low polygon models, and something that only slightly passes as a physics engine.

In Arizona, I was heading home, last day of work for 2 weeks... stopped at the the organic food store, somehow glanced behind me and noticed that the night sky was getting tore/lit up. Pulled out my phone cam started filming it while someone asked me "what is that?" I jokingly said it's a UFO, then I said it was a comet - but no shit I swear that a lot of people were thinking in the back of their minds - "WTF, North Korea about to start some SERIOUS SHIT!" lol

It has a similar sentiment to

Some time in the next ten thousand years
A comet's gonna wipe out all trace of Man
I'm banking on it coming before
My end of year exam

Excellent use of the vomit comet. They probably aren't going to get their cleaning deposit back though.
*promote

That assumes that we understand the nature of the Universe to an advanced degree enough to determine through our imagination (that was created in this Universe/Multiverse) - that an advanced species that exists far back in time, for a far longer time would evolve in somehow the same way as we have ("technology") and not have evolved on some entirely other level that we could not even imagine (yet) or even have the senses for.

There is the possibility for many dimensions. Using our monkey brains, with our monkey imaginations that are still evolving & being built upon - I might imagine that an intelligent civilization that has existed for billions of years would try to find the SAFEST place to exist. The safest place to exist (without fear of black holes, planet destroying comets, natural disaster, corruption, etc) would be in the form of energy; existing on a harmonic frequency that other intelligent lifeforms can tap into if they wish. But, once again that would assume that the senses I have been given and tools/experiences I have are valid in the grand scope of the Universe; of which they probably are not.

If the conversations were like this the entire time they tried to sell things on these types of 24/7 channels, I just might watch them. For the comedy, and to get some of the best fracking video clips in the Universe to play and re-play...

I'd love it if they had to label a really complicated star system that has three stars (two that are satellites--and obviously if this star system existed it would fall apart really fast or if it achieved equilibrium then it still has, as I/you can imagine, amazingly low chances of staying in this semi-stable state; like our own system...which IS falling apart, but it's just doing it at a moderately slow pace); then add in planets revolving around the stars, moons around the planets...and it will become hard to decide what is a satellite or a planet in some instances (as it may count technically as both).

Throw in a large debris field (an asteroid belt, but with "chunks" the size of very large moons--like 1.5x the size of our own Moon) and an Oort Cloud, again with comets that are as big as small moons/satellites and they will literally have no idea how to label anything.

The sad part is that I bet a very large segment of our population would also have the same problems with this task.

Sometimes, it is bad that we have Google...because some people will rely on it too much (especially so if it's students--those going through K-12, or similar setups in whatever country you're reading this from; but, not college...though problems do exist there, but it gets FAR harder to "lie" your way to a degree, etc...). However, if you are older and you use the Internet to look up things you don't know and if you remember any of it--this is when the Internet (or "Google") becomes a great tool and boon for humanity.

Nothing is better than spreading knowledge and wisdom.

Check out the roughly contemporary British civilian aeroplane the de Havilland Comet, too. I don't know of any link between the two, but they both feature engines much more set into the wings than U.S. designed aircraft, and both look much more futuristic than many later designs.

Congratulations! Your video, Dara O Briain rides the vomit comet: Stargazing Live, has reached the #1 spot in the current Top 15 New Videos listing. This is a very difficult thing to accomplish but you managed to pull it off. For your contribution you have been awarded 2 Power Points.

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