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"Apparently so - ironically the thread got so big it ran out of space. Started again….. " Sounds like it went though the black hole, inverted, and has started a new life cycle... the wonders of space!  | |||
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"Apparently so - ironically the thread got so big it ran out of space. Started again….. " I could always use a bit more space. | |||
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"To drive non-stop at 70 miles an hour it would take you roughly half a year to get to the moon, and a staggering 40.6 million years to get to our neartest star Proxima Centauri. "Proxima is a red dwarf star; the closest sun like star is Alpha Centauri at 4.3 light years away. | |||
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"Your space and history are not the truth, welcome to the reset and you bet this place is bigger than anyone can imagine, all adventurous souls are called to duty :D" ….and you would know because…? | |||
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"To drive non-stop at 70 miles an hour it would take you roughly half a year to get to the moon, and a staggering 40.6 million years to get to our neartest star Proxima Centauri.
Proxima is a red dwarf star; the closest sun like star is Alpha Centauri at 4.3 light years away."It takes proxima over half a million years to orbit Alpha Centauri A & B. | |||
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"If the sun was hollow you could fit 960,000 earths inside it" With us all being packed in there so densely it would get very hot - do you think they could leave the door open? Or would it be too draughty with the solar wind? | |||
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"There are more trees on earth than there are stars in the Milky Way " Unless you’ve counted them I find that impossible to believe. | |||
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"There are more trees on earth than there are stars in the Milky Way " I think you mean there are more Stars in the Milky Way than trees on Earth. Also, there are more Stars in the Universe than grains of sand on Earth. | |||
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"There are more trees on earth than there are stars in the Milky Way I think you mean there are more Stars in the Milky Way than trees on Earth. Also, there are more Stars in the Universe than grains of sand on Earth. "Fact check: University of Arizona reckons between 100 and 400 billion stars. geographyworld dot com agrees with the general consensus that there are about 3 trillion trees, according to satellite imagery. The original post was correct. | |||
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"There are more trees on earth than there are stars in the Milky Way I think you mean there are more Stars in the Milky Way than trees on Earth. Also, there are more Stars in the Universe than grains of sand on Earth.
Fact check: University of Arizona reckons between 100 and 400 billion stars.
geographyworld dot com agrees with the general consensus that there are about 3 trillion trees, according to satellite imagery.
The original post was correct."I stand (sit) corrected: Trees per person: Roughly 400 trees for every human alive. Before human civilisation took root, Earth had nearly 6 trillion trees. Human activity has reduced the total number by about 46%.Annual loss. The planet experiences a net loss of about 10 billion trees each year, with 15 billion cut down and roughly 5 billion planted or naturally regenerated. | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise." So do the people on Venus still get the weekend off? and what year is it there? | |||
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"Space is silent but the Earth is slowly warming up from the heat generated by the sounds and noises created here. Every sound and noise ever created ends up as tiny vibrations that turn into thermal energy, although the total amount is miniscule compared to greenhouse gases from burning fossil fuels, which are the main cause of global warming." Sound / noise doesn’t end up as tiny vibrations. The tiny vibrations are what those who have ears and a brain perceive as sound. Earth is silent too. | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise." Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun. | |||
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"Space is silent but the Earth is slowly warming up from the heat generated by the sounds and noises created here. Every sound and noise ever created ends up as tiny vibrations that turn into thermal energy, although the total amount is miniscule compared to greenhouse gases from burning fossil fuels, which are the main cause of global warming. Sound / noise doesn’t end up as tiny vibrations. The tiny vibrations are what those who have ears and a brain perceive as sound. Earth is silent too. " Sound is composed of vibrations. Ears detect them. Earth is not silent either. It has constant vibrations from wind, oceans, and quakes. Those vibrations turn to heat when they die out, but all noise ever made by humans adds less heat than one power station makes in a minute. | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise. Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun." Actually, retrograde spin means fewer sunrises, not more. As you say, Venus gets about 2 sunrises per year. If it spun the same way as its orbit, you’d get more sunrises, not fewer. | |||
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"I reckon there has to be some life forms out there, will we ever know?. I doubt it." Sometimes it feels like it would be easier meeting someone in space than on here ! | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise. Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun. Actually, retrograde spin means fewer sunrises, not more. As you say, Venus gets about 2 sunrises per year. If it spun the same way as its orbit, you’d get more sunrises, not fewer. " As Venus's day almost matches its year, if it spun in the same direction it would rarely see sun rises. Compare it to the Moon whose day exactly matches its year and spins in the same direction as its orbit around the Earth. It never gets to see an Earthrise. | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise. Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun. Actually, retrograde spin means fewer sunrises, not more. As you say, Venus gets about 2 sunrises per year. If it spun the same way as its orbit, you’d get more sunrises, not fewer. As Venus's day almost matches its year, if it spun in the same direction it would rarely see sun rises. Compare it to the Moon whose day exactly matches its year and spins in the same direction as its orbit around the Earth. It never gets to see an Earthrise." The Moon is prograde and tidally locked - day equals year - so it gets zero Earthrises. Venus is retrograde now and gets ∼2 sunrises per year. If it spun prograde at the same 243-day rate, you’d get ∼1 sunrise every 13 Venus years. Prograde spin cancels sunrises, retrograde adds them. | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise. Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun. Actually, retrograde spin means fewer sunrises, not more. As you say, Venus gets about 2 sunrises per year. If it spun the same way as its orbit, you’d get more sunrises, not fewer. As Venus's day almost matches its year, if it spun in the same direction it would rarely see sun rises. Compare it to the Moon whose day exactly matches its year and spins in the same direction as its orbit around the Earth. It never gets to see an Earthrise. The Moon is prograde and tidally locked - day equals year - so it gets zero Earthrises. Venus is retrograde now and gets ∼2 sunrises per year. If it spun prograde at the same 243-day rate, you’d get ∼1 sunrise every 13 Venus years. Prograde spin cancels sunrises, retrograde adds them. " Whoooosh! What was that going over my head? | |||
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"One day on Venus is longer than one year on Venus. Venus takes 243 Earth days to spin once on its axis, but only 225 Earth days to orbit the Sun. So if you lived there, you'd celebrate your birthday before you ever saw the next sunrise. Venus rotates opposite to its travel around the sun, so I think you would see 2 sun rises per Venusian year. If it rotated in the same direction, you might have to wait until your tenth birthday before seeing the sun. Actually, retrograde spin means fewer sunrises, not more. As you say, Venus gets about 2 sunrises per year. If it spun the same way as its orbit, you’d get more sunrises, not fewer. As Venus's day almost matches its year, if it spun in the same direction it would rarely see sun rises. Compare it to the Moon whose day exactly matches its year and spins in the same direction as its orbit around the Earth. It never gets to see an Earthrise. The Moon is prograde and tidally locked - day equals year - so it gets zero Earthrises. Venus is retrograde now and gets ∼2 sunrises per year. If it spun prograde at the same 243-day rate, you’d get ∼1 sunrise every 13 Venus years. Prograde spin cancels sunrises, retrograde adds them. Whoooosh! What was that going over my head?" The Tesco quick delivery man apparently! 😅 | |||
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"Planet 9 (no, not Pluto) There is some evidence to indicate that a celestial body with the mass of a planet could be orbiting somewhere far beyond Pluto. As for what to call the planet, my suggestion would be Prosperina " Could we just call it Vera instead | |||
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"Planet 9 (no, not Pluto) There is some evidence to indicate that a celestial body with the mass of a planet could be orbiting somewhere far beyond Pluto. As for what to call the planet, my suggestion would be Prosperina Could we just call it Vera instead" Well it was going to be called the Large Synoptic Survey Telescope (which sounds more like a Temu sex toy) I’d say VRCT is a quark better | |||
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"Apparently so - ironically the thread got so big it ran out of space. Started again….. " He's a spacer, a star chaser... | |||
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"Scientists forecast that the Sun will expire in about 5 billion years. When it does, Earth will have light for 8 minutes after it’s gone. Within a week Earth’s average temperature is forecast to be around -18°C. Within a month, most people would have frozen or starved. A few nuclear-powered bunkers could last decades. The oceans wouldn’t freeze solid for thousands of years, so deep-sea life would outlive land life on Earth." I believe part of a sun’s ‘death’ is that when it exhausts its hydrogen, it expands into a Red Giant, not go out like a light bulb. With our sun, and our orbital distance from it, it is extremely likely it will physically expand far enough to engulf and vaporise the Earth . Thus, our ending will be a fiery one, not a freezing one. | |||
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"Scientists forecast that the Sun will expire in about 5 billion years. When it does, Earth will have light for 8 minutes after it’s gone. Within a week Earth’s average temperature is forecast to be around -18°C. Within a month, most people would have frozen or starved. A few nuclear-powered bunkers could last decades. The oceans wouldn’t freeze solid for thousands of years, so deep-sea life would outlive land life on Earth. I believe part of a sun’s ‘death’ is that when it exhausts its hydrogen, it expands into a Red Giant, not go out like a light bulb. With our sun, and our orbital distance from it, it is extremely likely it will physically expand far enough to engulf and vaporise the Earth . Thus, our ending will be a fiery one, not a freezing one. " Thanks, yes current models predict both phases, although at 5 billion years out the details aren’t precise, so anything is possible. | |||
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"To drive non-stop at 70 miles an hour it would take you roughly half a year to get to the moon, and a staggering 40.6 million years to get to our neartest star Proxima Centauri.
Proxima is a red dwarf star; the closest sun like star is Alpha Centauri at 4.3 light years away."D'oh! We're discriminating against dwarfs now! Especially the little red ones, eh!  | |||
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"If you turned a giant fire hose onto the sun it would actually vet hotter" From a practical standpoint this is absurdly impossible. A spacecraft would melt at even 30 million miles out, and even our toughest probe survives only at 3.8 million miles with a carbon heat shield. A fire hose would vaporise long before reaching the Sun. However, as a hypothetical and theoretical question, the claim is actually true. Water would split into plasma, add mass and pressure to the core, and accelerate fusion, making the Sun burn hotter. | |||
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"1 cubic metre of the sun generates just 276.5 watts. Your body generates just over 1400 watts per cubic metre. You literally outshine the sun 5 to 1, you are beautiful. Someone should make a film about harvesting the energy from human bodies...." " Reminded me of the film Soylent Green but rather than harvesting the energy of people, they just harvested people 😵💫 " | |||
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"If you turned a giant fire hose onto the sun it would actually vet hotter From a practical standpoint this is absurdly impossible. A spacecraft would melt at even 30 million miles out, and even our toughest probe survives only at 3.8 million miles with a carbon heat shield. A fire hose would vaporise long before reaching the Sun. However, as a hypothetical and theoretical question, the claim is actually true. Water would split into plasma, add mass and pressure to the core, and accelerate fusion, making the Sun burn hotter." Yeah I definitely meant it literally  | |||
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"1 cubic metre of the sun generates just 276.5 watts. Your body generates just over 1400 watts per cubic metre. You literally outshine the sun 5 to 1, you are beautiful. Someone should make a film about harvesting the energy from human bodies...." Condensed sunlight | |||
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"There are planets out there that rain diamonds. And my favourite fact of all is the rarest substance in the whole universe is wood" Do you know the difference in meaning between implore and explore? | |||
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"If you turned a giant fire hose onto the sun it would actually vet hotter From a practical standpoint this is absurdly impossible. A spacecraft would melt at even 30 million miles out, and even our toughest probe survives only at 3.8 million miles with a carbon heat shield. A fire hose would vaporise long before reaching the Sun. However, as a hypothetical and theoretical question, the claim is actually true. Water would split into plasma, add mass and pressure to the core, and accelerate fusion, making the Sun burn hotter. Yeah I definitely meant it literally "Clearly! | |||
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"1 cubic metre of the sun generates just 276.5 watts. Your body generates just over 1400 watts per cubic metre. You literally outshine the sun 5 to 1, you are beautiful. Someone should make a film about harvesting the energy from human bodies...." they did. It was called the Matrix | |||
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"1 cubic metre of the sun generates just 276.5 watts. Your body generates just over 1400 watts per cubic metre. You literally outshine the sun 5 to 1, you are beautiful. Someone should make a film about harvesting the energy from human bodies.... they did. It was called the Matrix" …. or was it Soylent Green? | |||
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"If you are forcibly ejected from a spacecraft, the odds of being picked up by another ship while stranded in open space are exactly 2 to the power of 276,709 to 1 against. This is, of course, complete nonsense." Hitch hikers guide to the galaxy... | |||
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"Apparently nothing is faster than the speed of light but space is expanding faster than light can travel" What is space expanding into? | |||
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"What is space expanding into?" Scientists think space is infinite, if this is the case then space can continue to expand infinitely to its infinite self because it is infinite. If the universe (not space) has an edge then it simply expands into the surrounding space. I need a little rest! | |||
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"What is space expanding into? Scientists think space is infinite, if this is the case then space can continue to expand infinitely to its infinite self because it is infinite. If the universe (not space) has an edge then it simply expands into the surrounding space. I need a little rest! "My little human brain hurts! | |||
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"If it was possible to travel at the speed of light, you could traverse the distance to our nearest Galaxy in 2.5 million years… " ... as perceived by an Earth-based observer. Due to the Lorentz factor being infinite in this case, the rocket journey time for the space traveller would be zero. i.e. the journey would be instantaneous. | |||
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"Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space." You're a week late with that Douglas Adams quote 😉. | |||
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"The voyager 1 spacecraft which left earth in late 1970s. Will still be going through space in next few trillion years which would turn into quadrillion years "Or will it? Could it end up being like that big moth bumping into the ceiling light, at the ‘edge of space’? | |||
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But the fact it will outlive the human race is amazing. And I wonder how far it will actually go | |||
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"What is space expanding into? Scientists think space is infinite, if this is the case then space can continue to expand infinitely to its infinite self because it is infinite. If the universe (not space) has an edge then it simply expands into the surrounding space. I need a little rest! "There are a lot of people on here with space between their ears. | |||
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"What is space expanding into? Scientists think space is infinite, if this is the case then space can continue to expand infinitely to its infinite self because it is infinite. If the universe (not space) has an edge then it simply expands into the surrounding space. I need a little rest!
There are a lot of people on here with space between their ears.
"As they keep on proving on this forum!! 🙄 | |||
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"Voyager 1 has only traveled just over 1 light day since its launch of 50 years ago " Quite sadly, Voyager 1 is slowly running out of battery. It’s powered by nuclear heat from plutonium, that heat fades a little every year.To save energy, NASA keeps turning off parts of the spacecraft. Only 2 instruments are still on. Eventually there won’t be enough power left, and Voyager 1 will go silent as it drifts through interstellar space. It’s hoped it will make it to 5th September next year, which will mark 50 years since its launch. | |||
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"All the planets in the solar system can fit in the space between earth and our moon" Only sometimes though | |||
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