Thank you for your hard work and your amazing content that keeps me updated on such amazing things in our universe. You should have millions of subscribers yet the majority of people unfortunately watch content that doesn't expand their knowledge. I'm truly thankful for content creators like yourself!
Kudos to you sir for pronouncing km as “kill-oh-meeters” and not mispronouncing it “kah-law-mutters” as so many do ! Just another sign that this is an informational channel that puts accuracy high on its priority list.
I'm Canadian, and we say it the other way. But it's always struck me as strange compared to "kilograms" so I've shifted my pronunciation. But "laa-va" is a hill I'll die on.
Concerning perchlorates, they are soluble in water and can be refined to be the oxidizer in solid rocket fuels. Using something like a Soxhlet extractor can minimize water use during this process
I don't want to say you've put out a lot of videos this week, - but I will say I have seen quite a few of your most recent videos just this week alone. *Question: How do you do it? Your team must be amazing
How about using old starlink satellites to de-orbit space junk. Just add that capability to the starlinks. Also, have a bounty on space junk to make it worthwhile.
Some of my nearest colleagues are working on the fission-driven rocket, forgetting the name. This one with the ion engine is pretty cool too and would fit our expertise even better. I was familiar with ramjets and the concept to whip the air so that thrust wins over air resistance, but never occurred to me that this would be a viable operating space. I guess it is. Very nice.
wow, the china lander is actually not designed to be top heavy with a too small base? what a concept. seems like a better idea than putting some crappy legs on a server rack and shooting it at the moon.
I would like to know why Jupiter has bands and ripples of colour in its atmosphere. Why don't they just all meld together into a homogeneous gas? You could put this in your next question show.
I find DACs and metallic hydrogen fascinating. Which astronomers say is near the core of jupiter. I think it's was an astronomer that moved on after saying such thinking 'they won't find out until I am long dead.
0:30 on the drawing the "constistant spot" was on the northern hemisphere, while we see it on the southern hemisphere on pictures today, have someone held the telescope upside down or have the "spot" moved? Crossed the equator?
Both Refractor telescopes ( the earliest ), and Newtonian Reflectors invert the image, swapping right for left and up for down Binoculars use a second reflecting surface in their optics to reverse this and flip it again to normal. Today you can buy eyepieces that do the same flip as binoculars, or just have a computer do it to your transmitted space probe data....
Boeing should have to pay for their test crew to return home in a Dragon capsule, and theirs should return carrying their weight in garbage and human waste.
Lunar nights are cold, damned cold. The temperature on the moon can reach a blistering 250° Fahrenheit (120° Celsius or 400 Kelvin) during lunar daytime at the moon's equator, and plummet to -208 degrees F (-130° C, 140 K) at night.
14 days at a time on the dark side at -200˚ F or as low as -400˚ F if it's in constant shade (in a crater) Batteries and motors don't function well at those temperatures.
More likely they are afraid of plasma cosmology, the only self-contained physical theory of the universe. All other theories, including Big Bang, are ad hoc curve-fitting, not physical theories.
Plasma isn't a mystery. Mainstream cosmologists don't like the word because of plasma cosmology, the only self-contained physical theory of the universe.
Plasma makes up more than 99% of the universe. Everybody knows about it. What mainstream cosmologists hope you don't know about is plasma cosmology, the only self-contained physical theory of the universe.
With the world beset by so many problems, it is so unlikely people will ever go to Mars, given the tremendous cost of getting there and the enormous hazards of getting to Mars and staying there even for a very short time, let alone permanently. Since Mars can not be changed to make it more like Earth, you would always have to live in a dome or other kind of artificial environment. That would not be attractive and you would never be able to walk outside without a spacesuit. And the lower gravity will have damaging health effects that given enough time will probably kill you. Still want to go?
Is there some other way to describe matter falling into a Black Hole, other than feeding or snacking. I just find it annoying cause this thing is not alive 😒
@@frasercain I'm scratching my head, has he approached a black hole closely and actually monitored its vital signs? Besides, it's doing the crunch and munch. Well, except for Sag A*'s non-meal of G2. Sneaky thing, hiding a star inside of that sock... ;) Although, I am a bit surprised that we didn't get at least a small burble from that event, should've lost at least some gas during that pass. Guess the dragons intercepted it all. :P
Well, they're adding to things enough, why not just design a balanced ecosystem for one's habitat? Get sewage treatment, radiation shielding, food and CO2 - O2 exchange plus volatile exchanges all in one fell swoop.
The crew on Starliner need to go home on Space X Dragon & NASA needs to bring Boeing Starliner home on remote control if its survive they can fix if not nobody dies.
They need to abandon Apollo 13, those helium discs burst and the universe will end! Seriously, it's a helium leak that is so slow it'll not run low for two weeks. By your standards, we'd still be working on Mercury 1!
I agree based on NASA standards and goals, boeing did not complete a successful mission, Now where is NASA's hls from SpaceX based on goals for the Artemis mission. Or will SpaceX be using starship as a starlink ship to ruin ground based astronomy? Hypocrite Now it is $70m+ per seat to use crew dragon. Fantastic cost reduction by SpaceX.
So what will they feed the tilapia? Rather than haul the fish food to feed the tilapia, raise food for the tilapia...algae? What to fertilize the algae with? Tilapia waste? Rather circular. Wouldn't aquaponics introduce a lot of failure points to an already complicated system with lots of moving parts?
I saw few years ago article how hydroponics and ichtioponics are mutually beneficial. Basically you feed fish with things that are waste from hydroponics. It's not enclosed system, but it is way more efficient than hydroponics only.
The starliner saga is starting to look like Challenger's. Not that bad because the Challenger even was practically manslaughter. Nasa should return the capsule in automatic mode and leave the astronauts in the Internation space station until Dragon can go for them. It will be extra money but we are talking about lives. Again, NASA should talk to Space X to build a couple more dragons to avoid overutilization and to preclude Space X from forgetting how to build them.
Boeing Starliner return dates: 2024-06-16 canceled 2024-06-22 canceled 2024-06-26 canceled Now they're talking early july ... It'll get interesting wehen they're getting close to the 45 day expiration date ...
So the drawing of the red spot is on the top. Was he looking at it upside down? or did you have the image upside down? Or was that a different spot seen all the way back in the 1600s?
Optics was also a lot more primitive, images may be inverted in some telescopes, not in others, all lenses were hand ground and hence, quality was variable to put it kindly. What we give to children as a toy today far outclasses many of those ancient telescopes! Now, oddly unmentioned, the Red Spot is infamous for growing and shrinking, with predictions that it'll disappear soon being made for longer than I've been alive (I was born a week after Tsar Bomba was detonated, so I've been around for a few weeks or so). There is only one constant with any Jovian storm - change. Hell, I remember predictions of the Red Spot merging with, it's gonna merge, it's merg - erm, it missed! Enough said, we're still learning the science and math behind Jupiter and well, I'm being quite generous in that statement, as we're still discovering new phases of water that can be found under Jovian conditions - including novel phases of ice that are believed to be present in the earth's mantle. Yes, I said ice in the mantle. Pressure takes our STP (Standard Temperature and Pressure) handbook and tosses it out the window.
Imagine an advanced civilization, with faster than light spacecraft, discovering our earliest radio frequency transmissions. They could learn everything about us on their way here.
How would they receive signals that they're moving faster than and even at light speed would be blue shifted beyond gamma radiation from their perspective?
@@Wurtoz9643 Aren't you talking about the 1936 Olympics? The 1940 Olympics were going to be held in Tokyo, but were transferred to Helsinki, then cancelled. The 1944 Olympics were cancelled. The 1948 games were in London.
Will you do the deep dive into the galactic flat rotation curve paper? This could be big if true and verified. I've seen some people just say we have to expand the sphere/halo of dark matter ("just add another epicycle" 😅) around galaxies, but that simple fix requires expanding it by a factor of @7,000by volume. The whole dark matter solution is beginning to strain credulity. What do you think? Is this for real?
Question: In regard to the quasar merger. If the merger takes a billion years and we assume expansion continues to accelerate, would we actually ever see it, or would it expand out of our sight cone first? Thanks for yet another great show. Boeing... facepalm?
We’ve got to come up with an appropriate time designation and replace BC, CE, BCE, AD. Got to get rid of these religious symbolisms and go with a scientific designation, even we start it at a different era.
Thank goodness SpaceX is here. Otherwise Starliner would be our only option other than Russia. Can you imagine the gloating from Russia if we were still having to use them?
Do you think the most probable/ most common multi-"planetary" life would be in a system of multiple (habitable to them) moons around a large planet? Rather than a society populating several actual planets or even star systems being more common?
All of these explanations for galactic phenomenon are interesting. Now let's count down the years until new observations are made and new, different explanations are made for the same phenomenon. 🙂
That great Red spot will be the New moon for Jupiter as it reaches the equator and poop itself out. It will take billions of years but it will happen.🎉
I read an item which claims that when satellites burn up on reentry the effect of the aluminium vaporising damages the ozone layer and that the expected redundant starlink etc constellations would cause significant long term problems when retired. This would obviously be exacerbated by any space junk clean up in the future. Any thoughts? BTW thanks for the outstanding content. Im hooked.
I worry about this too, so I googled it and found: "All things considered, says meteor specialist Peter Brown (University of Western Ontario), roughly 40,000 metric tons of interplanetary matter strike Earth's atmosphere every year." I don't know how much space debris there is, and if it is significant compared to this natural influx. @frasercain could be an interesting topic if you haven't covered it already?
We've only managed to put 9300 tons into space over our entire space career and aluminum is a large constituent of space rocks that are raining down, so no significance.
@@filonin2 thanks for the reassurance! I did some more googling, and found question 88 on space stackexchange. Numbers there suggest around 15,000 tons in total. It also mentions Musk's 2022-02-11 Starship Update where he projects launching 15,000 tons per year with 3 launches per week. That sounds a tad optimistic to me, but even then most of that will either stay in orbit for a long time, or leave earth orbit altogether.
