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re: Radio signal from Proxima Centauri looks like it could be the real deal.
Posted on 12/21/20 at 5:43 pm to boxcarbarney
Posted on 12/21/20 at 5:43 pm to boxcarbarney
quote:
Proxima Centauri is only 4 light years from us.
4.2465 light-years
So they think Hillary is president?
This post was edited on 12/21/20 at 5:45 pm
0
Posted on 12/21/20 at 5:45 pm to soccerfüt
quote:
980 MHz on your dial, the Mighty Nine Eighty!
Marvin the Martian here with your traffic and weather
"Looks like the morning commute is going to be a pain. We have a wrecked semi merchant cruiser on the Intergalactic 10 highway bridge. Traffic is blocked in all four dimensions of travel."
This post was edited on 12/21/20 at 5:46 pm
Posted on 12/21/20 at 5:57 pm to DirtyMikeandtheBoys
quote:
It is extremely unlikely a detectable light wave could be sent to us from another star system that we could actually monitor.
That would be like us being able to send out a light wave that is stronger than the light waves sent out by our sun. If we could even create a signal that strong, it alone, would have to destroy our solar system let alone our planet and us.
Only detectable signals we can hope for must come from our own system or empty space.
Huh?
We monitor radio waves every day from tons of telescopes on earth and in space. I think much of what you said is completely false. All radio waves travel at the speed of light, the difference being how energetic that particular wave is. Radio waves are not very energetic. Gamma rays will frick us up if they're close enough.
This post was edited on 12/21/20 at 5:59 pm
Posted on 12/21/20 at 6:04 pm to DirtyMikeandtheBoys
quote:
That would be like us being able to send out a light wave that is stronger than the light waves sent out by our sun. If we could even create a signal that strong, it alone, would have to destroy our solar system let alone our planet and us.
If you're assuming that the signal is blasting out like the sun's light in all directions, sure. Nothing says that every radio signal has to be like your local wacky morning zoo crew's broadcast, though.
Light can be highly directional. A laser is a prime example of this idea. It's fairly trivial (if you're a laser scientist and have the funding) to make a laser beam that has a higher energy density than the light the sun emits. Hell, they made a laser a billion times brighter than the sun in NEBRASKA. It can't be that hard. The total energy is tens or hundreds of orders of magnitude lower than the energy of the sun. Still, if you're in the way of the beam, you're properly fricked. Think "lighthouse" and not "streetlamp".
Tightly focused radio is how we communicate with the Voyagers. We don't just blast signals out into space in every direction. First off, half of the time, the Earth would be in between the radio transceiver and the Voyager we're trying to talk to. Second off, the transmitter would have to be ungodly powerful. Instead, we use three giant arse dishes roughly equally spread around the planet (so that at any moment at least one of them can see the Voyagers) and use a very narrow radio signal strong enough to be picked up by the Voyagers that is precisely aimed at where they are in space.
The argument you made, though, was EXACTLY the same argument made by a lot of astrophysicists when we were first trying to figure out pulsars. Once we started figuring out how far away these pulsars are, some of those guys calculated how much energy they'd have to output to be as bright as we see them at those distances and they were literally too bright to exist; yet there they were. Someone finally thought 'lighthouse, not streetlamp' and the idea of "bright but focused" was one of the keys to helping them figure it all out.
This post was edited on 12/21/20 at 6:27 pm
Posted on 12/21/20 at 6:06 pm to Slippy
quote:
Even more tantalizing: The signal reportedly shifted slightly while it was being observed, in a way that resembled the shift caused by the movement of a planet. Proxima Centauri has one known rocky world 17% larger than Earth, and one known gas giant.
THEY KNOW
Posted on 12/21/20 at 6:07 pm to TigerstuckinMS
That ain’t no aliens, that’s just Shonika on her Dollar General cordless phone.
Posted on 12/21/20 at 6:18 pm to td1
Space is big and radio waves are common, if you look long enough you will find signals all up and down the electromagnetic spectrum. Some will move too, bc shite also moves in space. The fact they heard it once and not again makes me think it’s stray RF.
Posted on 12/21/20 at 6:26 pm to td1
quote:
Space is big and radio waves are common, if you look long enough you will find signals all up and down the electromagnetic spectrum. Some will move too, bc shite also moves in space. The fact they heard it once and not again makes me think it’s stray RF.
Seth Shostak of the SETI Institute is the man on these things and he says it could be aliens but it could also easily be one of our satellites or even...
quote:
there’s always the possibility that the signal is really, really local. A microwave oven in the break room of the Parkes radio telescope caused considerable consternation five years ago when it produced signals that, at first, suggested that something remarkable was happening in the distant cosmos. In fact, it was just someone heating up lunch.
SETI Institute
Posted on 12/21/20 at 6:28 pm to Diseasefreeforall
quote:
In fact, it was just someone heating up lunch.
from aliens to a.....Hot Pocket.
What a turn of events
Posted on 12/21/20 at 6:31 pm to boomtown143
In the early days of radar research they had signal issues due to pigeon’s crapping all over the inside of the feed horns. Another useless fact.
Posted on 12/21/20 at 6:34 pm to td1
quote:
In the early days of radar research they had signal issues due to pigeon’s crapping all over the inside of the feed horns.
"white dielectric material"
Posted on 12/21/20 at 6:40 pm to TigerstuckinMS
quote:
"white dielectric material"
That would be the correct technical term, but this is the OT so we have to go with pigeon crap.
Posted on 12/21/20 at 6:47 pm to Slippy
The gas planet farted, nothing else.
This post was edited on 12/21/20 at 6:48 pm
Posted on 12/21/20 at 6:48 pm to Datfish
quote:
2020: Worst year ever
Posted on 12/21/20 at 6:50 pm to jaytothen
quote:
Proxima Centauri females are about to get slammed with dick pics from basement dwelling neckbeards on that channel
I’m ashamed to admit my first thought was to reply with a dick pic and see what happens.
Posted on 12/21/20 at 6:51 pm to Slippy
Its Babyfartmcgeezacks, the greatest gangster the universe has ever known seeeeeeee.....
Posted on 12/21/20 at 10:29 pm to TigerstuckinMS
quote:
Well, that's because they ARE light.
Incorrect. They are electromagnetic radiation, as is light.
This post was edited on 12/21/20 at 10:30 pm
Posted on 12/21/20 at 10:36 pm to Slippy
As I have heard, the signals evidently were a nearly perfectly duplicated old I Love Lucy TV show. Very confusing.
Posted on 12/21/20 at 10:39 pm to MeridianDog
How are you feeling today?
Posted on 12/21/20 at 10:48 pm to red sox fan 13
quote:
will believe aliens are real when I see them with my own eyes. Until that happens, I think it’s all a bunch of BS
I’ll be the first to admit i don’t know dick about astrophysics or astronomy or whatever, but i think there just about have to be aliens. Maybe they are plants or like, idk, blobs floating around in liquid or something. We are on one planet orbiting one star, and we can only observe a small fraction of the stars in the universe. With all the stars out there, what would make you think we are the exception, the only one?
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