Gian

BTW I don't think Im naturally talented at maths, (highest; grade C at GCSE.) Do you think I'd need to be 1st class BA (hons.) material at mathematics to have a hope of being a professional astrophysicist working eg for nasa? Cheerz GIAN 🙂

Thanks Mr Beece, that's interesting. I'll have to go and look up quantum/ planck theory, and also Planck volume. but well done for getting me motivated. BTW I'm not naturally talented at maths, (highest; grade C at GCSE.) Do you think I'd need to be 1st class BA (hons.) material at mathematics to have a hope of being a professional astrophysicist working eg for nasa? Cheerz GIAN 🙂

At what point in the future before the heat death of the universe (which I believe will be in 10¹⁰⁰ years' time) will it become impossible for any sort of biological life anywhere in the universe to continue? Will it be when all the stars have burnt out or what? Cheerz GIAN 🙂

Well because I was given the impression that the singularity does not and cannot have any dimensions; the singularity is 0x0x0mm. Yes it's not instantaneous, but I thought that because of the gravity involved, it wouldn't take that long to reach 0x0x0mm. But given these forces, I guess it never quite gets there. I read somewhere that eventually black holes will evaporate away, although I've no idea how

I found loads of Red Squirrels on the Isle of Wight in the summer, but due to the invasion of Grey Squirrels very few are left on the mainland of Great Britain. Is it theoretocally possible to develop a pharmaceutical contraceptive substance specific to one particular species like the Grey Squirrel, but which would not affect Reds or any other species? We need our Reds back! Cheerz GIAN😊

To everyone who's replied THANKS ❤🙂🙂

Thanks 🙂 Does her composition give psyche a magnetic field? Thanks 🙂

Do we know many metals are in the outer solar system? eg the gas giants, Pluto, their moons and the Kuiper belt? Or can someone point to some easily intelligible layman's literature. I'm thinking that if human beings were living there, they'd need to mine metals to make their own stuff. Cheerz GIAN 🙂

Cheerz x

Theoretical physicists always proclaim portentously that the singularity at the centre of a black hole "is where our laws of nature break down" which sounds to me like another way of saying "we don't know the answer." But as no physical process is ever absolutely instantaneous (I think,) surely the collapsing matter gets smaller and smaller while slowed down by ever increasing density so it never quite gets to the singularity and the process continues to infinity. Eg if you keep dividing 1 by 2 you'll never get to zero. Cheerz GIAN🙂 (I've no science qualifications beyond gcse maths n physics grade C, so pls be gentle with me.)

For vitamin D synthesis, is daylight on an overcast day as effective as direct sunshine? Cheerz GIAN

Thanks for the above replies. Hi Zapatos, with a pulled pork sarnie I could do without chips. But yes you have a really good point. Sci-fi often pictures settlers arriving on new worlds and then starting agriculture to support themselves. But in our solar system, maybe it would be a good idea to start producing food on other planets of the solar system before people get there. And if someone sent a crate of pork chops to Titan, with her surface temperature of -290°F, I bet they'd still be edible even if explorers didn't get there for another ten years.

Scientists theorize that there may be a big subterranean ocean of liquid salt water on Europa, and there is a proposal to send a space probe which could drill down to it. In such an ocean there would be presumably no light, and I don't know if there'd be any CO2 or what temperature the water would be, but by introducing autotrophs from our own oceans would it be possible for explorers to start a food chain, gradually introducing higher species culminating in fish? This would permanently give explorers and settlers something to eat, although they'd have to have chips sent up from Earth. Cheerz GIAN 🙂

Cheerz Gian x

If microbial life is discovered in Venus' atmosphere, and samples are collected, will science be able to tell us whether its ancestry somehow found its way there from Earth, or whether it's definitely a product of abiogenesis on Venus? Thanks GIAN 🙂

Thanks Swansont. What is 'displacement?' 🙂

Apparently the Orion Project for nuclear powered spaceflight asserted that by this method with an acceleration of 1G an Orion spaceship could attain a speed of 10% of the speed of light (c.) Mathematically, how do I work out 1. the length of time it would take to get from 0 to a speed of c/10 (ship's time,) and 2. what would be the distance travelled in that time? Cheerz GIAN🙂

Thanks 🙂

I picture explorers creating giant igloos to use as greenhouses, with methane-powered heating to room temperature and melting water ice for crops and pasture, and also extracting oxygen from water (electrolysis?) to make breathable air. But yes I suspect there wouldn't be enough 'goodies' on the Titanian surface to grow stuff, so the astronauts would have to bring their own compost. Can you define magnetosphere and explain why it would be a problem for animals please? (I'm a novice at science) Thanks GIAN 🙂

When explorers eventually reach Titan, I suppose they could take some farm animals with them which if they had enough to eat would create manure, although I'm not sure how pigs and cattle would get on in the low gravity (flying pigs?) But would there be enough minerals lying about on the surface to use as soil to grow crops? Would there be enough nutrients in it? Titanian wheat and potatoes?🙂

On the other hand, could biology one day become machines? Eg, scientists could design biological organisms to do what machines do for us now? A biological motorcar which can drive passengers around on wheels at upto 100mph but also eats grass for fuel?

The natural human lifespan has extended from the lifespan of the first life forms. Is the extension of lifespan a natural consequence of evolution and will it continue? What I mean is, is it at least possible with natural selection that vast organisms something like dinosaurs could evolve again?

Three questions 1) If the first life forms c 4y.billion ago lived about 24 hours (?) and we now live about 80years, in another 4y.billion will life expectancy continue to increase in a straight line and our descendants will have lifespans of 2.5y.millon?? If so it will certainly make intergalactic travel more practical! 2) Is our species H.Sapiens continuing to evolve? Will our descendants become a new species or species? 3) Will the natural course of evolution without human agency cause the dinosaurs or something like them to evolve again in the far future? Cheerz GIAN 🙂

Thanks 🙂

If we can create nuclear bombs 1000x hiroshima, wouldn't it be fairly simple to use it to power space ships which could accelerate to the point where a trip to the outer planets would take days rather than years? Is it true that this is already quite possible, but governments won't let us do it because of the potential dangers of nuclear accident? Cheerz GIAN xx