December 20, 20205 yr https://www.theguardian.com/science/2020/dec/18/scientists-looking-for-aliens-investigate-radio-beam-from-nearby-star A wow signal...
December 20, 20205 yr 3 minutes ago, Dimron said: https://www.theguardian.com/science/2020/dec/18/scientists-looking-for-aliens-investigate-radio-beam-from-nearby-star A wow signal... I think the scientists on the Breakthrough Listen project need to occasionally justify the £70m funding of their existence with exciting news occasionally Can't think of an easier job
December 20, 20205 yr 7 minutes ago, Dimron said: https://www.theguardian.com/science/2020/dec/18/scientists-looking-for-aliens-investigate-radio-beam-from-nearby-star A wow signal... Just imagine if we found a signal from our nearest star? Massively unlikely that it's anything exciting sadly. But we can dream!
December 20, 20205 yr 6 minutes ago, kent_white said: Just imagine if we found a signal from our nearest star? Massively unlikely that it's anything exciting sadly. But we can dream! It would take 81,000 years to get to the nearest Star. Madness
December 20, 20205 yr 19 minutes ago, kent_white said: Just imagine if we found a signal from our nearest star? Massively unlikely that it's anything exciting sadly. But we can dream! Then unscramble the message "we're coming for your water". 😯
December 20, 20205 yr 1 minute ago, MickyD said: I thought our nearest star was the sun. 93,000,000 miles away. It is.
December 20, 20205 yr 15 minutes ago, gonzo said: It would take 81,000 years to get to the nearest Star. Madness Here's a headspinner for you from something I was watching the other day. Left the link below for you! Imagine you invented a ship with a drive which could accelerate you constantly at 1g with no upper speed limit. On any journey you'd spend half of your outward journey accelerating and then the second half decelerating. Then turn around and do the same in reverse for the journey home. Using a drive like that - you could mathematically reach the Laniakea Supercluster (25,000,000 light years away) and return to earth in about 76 years. Just about as far as you could reasonably travel in a human lifetime. You'd end up going so fast that at max speed you'd reach .999999998 the speed of light and your Lorenz factor would be 250 million. Unfortunately by the time you got home and because of the ridiculous time dilation - even though you'd only aged by 76 years about a billion years will have gone past on planet earth. Looking on the bright side - we might be out of League 2 by then! 🙂
December 20, 20205 yr 18 minutes ago, MickyD said: I thought our nearest star was the sun. 93,000,000 miles away. Nearest neighbouring star!
December 20, 20205 yr 5 minutes ago, kent_white said: Here's a headspinner for you from something I was watching the other day. Left the link below for you! Imagine you invented a ship with a drive which could accelerate you constantly at 1g with no upper speed limit. On any journey you'd spend half of your outward journey accelerating and then the second half decelerating. Then turn around and do the same in reverse for the journey home. Using a drive like that - you could mathematically reach the Laniakea Supercluster (25,000,000 light years away) and return to earth in about 76 years. Just about as far as you could reasonably travel in a human lifetime. You'd end up going so fast that at max speed you'd reach .999999998 the speed of light and your Lorenz factor would be 250 million. Unfortunately by the time you got home and because of the ridiculous time dilation - even though you'd only aged by 76 years about a billion years will have gone past on planet earth. Looking on the bright side - we might be out of League 2 by then! 🙂 Plop!
December 20, 20205 yr 5 minutes ago, kent_white said: Here's a headspinner for you from something I was watching the other day. Left the link below for you! Imagine you invented a ship with a drive which could accelerate you constantly at 1g with no upper speed limit. On any journey you'd spend half of your outward journey accelerating and then the second half decelerating. Then turn around and do the same in reverse for the journey home. Using a drive like that - you could mathematically reach the Laniakea Supercluster (25,000,000 light years away) and return to earth in about 76 years. Just about as far as you could reasonably travel in a human lifetime. You'd end up going so fast that at max speed you'd reach .999999998 the speed of light and your Lorenz factor would be 250 million. Unfortunately by the time you got home and because of the ridiculous time dilation - even though you'd only aged by 76 years about a billion years will have gone past on planet earth. Looking on the bright side - we might be out of League 2 by then! 🙂 Mindfuck. 1g-is that particularly great for a rocket ship? Would need a rather large supply of fuel though!
December 20, 20205 yr 42 minutes ago, Tonge moor green jacket said: Mindfuck. 1g-is that particularly great for a rocket ship? Would need a rather large supply of fuel though! Constantly accelerating at 1g. You get very fast very quickly!
December 20, 20205 yr Just now, kent_white said: Constantly accelerating at 1g. You get very fast very quickly! Indeed. Just not particularly high really. I think it's similar to a car reaching 60mph in around 2.5 seconds or thereabouts. Its keeping that up that is very impressive I suppose. Suppose its a bit like shagging a bird umpteen times a night. Then in the following day, and the night after etc. Need a pint sooner or later.
December 20, 20205 yr Just now, Tonge moor green jacket said: 9.8m/s² iirc. Cheers. Science very much not a strongpoint of mine.
December 20, 20205 yr 2 minutes ago, Escobarp said: Cheers. Science very much not a strongpoint of mine. The acceleration due to gravity. As kent says, although its not huge, to keep it going at that level rapidly increases your speed.
December 20, 20205 yr So it’s the result of the gravitational Force? So if you dropped a brick off a high rise you could measure the speed in g?
December 20, 20205 yr 1 minute ago, Escobarp said: So it’s the result of the gravitational Force? So if you dropped a brick off a high rise you could measure the speed in g? It would be 1g if you dropped a brick off a high rise - providing the high rise was on earth of course!
December 20, 20205 yr 1 minute ago, kent_white said: It would be 1g if you dropped a brick off a high rise - providing the high rise was on earth of course! This has blown my mind. Rabbit hole incoming
December 20, 20205 yr 3 minutes ago, Escobarp said: This has blown my mind. Rabbit hole incoming You are constantly accelerating towards the centre of the planet at around 10m/s. It's just that there's a planet in the way stopping you from falling. And that's the force you experience as gravity. Get your head around that bugger! Edited December 20, 20205 yr by kent_white
December 20, 20205 yr 4 minutes ago, Escobarp said: So it’s the result of the gravitational Force? So if you dropped a brick off a high rise you could measure the speed in g? 2 minutes ago, kent_white said: It would be 1g if you dropped a brick off a high rise - providing the high rise was on earth of course! Is the journey taking into account terminal velocity or ignoring it? If you drop an object in air it will accelerate to a certain speed and then gain no increase in speed once TV is reached.
December 20, 20205 yr 1 minute ago, MickyD said: Is the journey taking into account terminal velocity or ignoring it? If you drop an object in air it will accelerate to a certain speed and then gain no increase in speed once TV is reached. The space journey? There wouldn't be a terminal velocity because they're in vacuum.
December 20, 20205 yr 4 minutes ago, kent_white said: You are constantly accelerating towards the centre of the planet at around 10m/s. It's just that there's a pln What's a pln?
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