Dimron Posted December 20, 2020 Share Posted December 20, 2020 https://www.theguardian.com/science/2020/dec/18/scientists-looking-for-aliens-investigate-radio-beam-from-nearby-star A wow signal... Quote Link to comment Share on other sites More sharing options...
Moderators Zico Posted December 20, 2020 Moderators Share Posted December 20, 2020 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 Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 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! Quote Link to comment Share on other sites More sharing options...
gonzo Posted December 20, 2020 Share Posted December 20, 2020 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 Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 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". 😯 Quote Link to comment Share on other sites More sharing options...
Site Supporter MickyD Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 I thought our nearest star was the sun. 93,000,000 miles away. Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 1 minute ago, MickyD said: I thought our nearest star was the sun. 93,000,000 miles away. It is. Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 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! 🙂  Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 18 minutes ago, MickyD said: I thought our nearest star was the sun. 93,000,000 miles away. Nearest neighbouring star! Quote Link to comment Share on other sites More sharing options...
gonzo Posted December 20, 2020 Share Posted December 20, 2020 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! Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 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! Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 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! Quote Link to comment Share on other sites More sharing options...
Escobarp Posted December 20, 2020 Share Posted December 20, 2020 Is G a measure of speed? Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 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. Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 Just now, Escobarp said: Is G a measure of speed? 9.8m/s² iirc. Quote Link to comment Share on other sites More sharing options...
Escobarp Posted December 20, 2020 Share Posted December 20, 2020 Just now, Tonge moor green jacket said: 9.8m/s² iirc. Cheers. Science very much not a strongpoint of mine. Quote Link to comment Share on other sites More sharing options...
Site Supporter Tonge moor green jacket Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 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. Quote Link to comment Share on other sites More sharing options...
Escobarp Posted December 20, 2020 Share Posted December 20, 2020 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? Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 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! Quote Link to comment Share on other sites More sharing options...
Escobarp Posted December 20, 2020 Share Posted December 20, 2020 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 Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 (edited) 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, 2020 by kent_white Quote Link to comment Share on other sites More sharing options...
Site Supporter MickyD Posted December 20, 2020 Site Supporter Share Posted December 20, 2020 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.  Quote Link to comment Share on other sites More sharing options...
Escobarp Posted December 20, 2020 Share Posted December 20, 2020 That voice is what I imagine it would be like listening to farrelli Quote Link to comment Share on other sites More sharing options...
kent_white Posted December 20, 2020 Share Posted December 20, 2020 1 minute ago, MickyD said: Â 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. Â The space journey? There wouldn't be a terminal velocity because they're in vacuum. Quote Link to comment Share on other sites More sharing options...
Lt. Aldo Raine Posted December 20, 2020 Share Posted December 20, 2020 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? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.