orientalNoodle
Banned
Since the star is a red dwarf, any alien life form on these goldilocks planets must have evolved with brown or dark skin.
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NASA exoplanet discovery conference (7 Earth-sized planets, 3 in habitable zone)
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Valdfellgar
Banned
Was discussing this with my father, a physicist, in the unlikely event there's intelligent life over there and they were receiving our broadcasts then they'd currently be viewing 1977 TV. So MASH, Columbo, All in the family, etc.
rokkerkory
Member
All this doesn't matter unless we find a way to travel faster than light. :/
Chiaroscuro
Member
Well, that the usual for turism advertising.
We really need jump points for hyperspace travel.
DragonGirl
Member
Not necessarily. The planets are pretty tightly packed and their gravitational interactions could prevent tidal locking. Also, a planet with an atmosphere, even if tidally locked, could still cycle that heat around via winds. And finally, even if the first two scenarios are a no, the twilight zone of a tidally locked planet could support life.
Shogmaster
Member
It would take Apollo speed craft only a smidge over a million years to get there lol
We'll call the 7 planets Orval, Chimay, Rochefort, La Trappe, Westmalle, Achel and Lotus. Sounds pretty good to me.
"THESE HU-MANS SEEM TO LIKE SOMETHING CALLED STARRR WAAARS?
Well let's give it to them"!
Elfforkusu
Member
???
Aping a comment from hacker news:
These are the real-world best case numbers. FTL isn't necessary (and probably never going to happen, anyway), but we'd better be ready to pony up some serious $$$, because 25th century space propulsion tech isn't going to invent itself...
:lol, love the photobomb at the endgoogle doodle commemorating the discovery
Alucard725
Neo Member
Probably just another exoplanet ......
Better get to the shuttles then. Oh wait...
Auto-Reply
Member
It wont reach them or they haven't developed the tech to interpret it... because if it would or if they'd had... we are getting nothing from them (or aren't able to find it).
Droopaloop
Banned
Hey... What's wrong with MASH?
It's just such a shame we don't have this in reverse.
Think how fucking bizarre it would be to get insight into an alien Species by receiving transmissions of productions of their acting equivalent of Columbo.
Our first contact meeting - "ZOMG is your Alien Peter Falk alive, we loved that purple blob who went round solving Trappist planet 2b crimes"!!
Think how fucking bizarre it would be to get insight into an alien Species by receiving transmissions of productions of their acting equivalent of Columbo.
Our first contact meeting - "ZOMG is your Alien Peter Falk alive, we loved that purple blob who went round solving Trappist planet 2b crimes"!!
I know that time is going faster for people in space but I don't understand nor can I wrap my head around it. It's basically like time travel when I can get somewhere where 1 year for me means 5 years on earth.
Droopaloop
Banned
I know I've read in places that GPS satellites have to have clock adjustment's because of their orbit from Earth. Because they are farther from earth's gravitational force, they experience a lesser amount of time dilation; so their clocks have to be turned back minutely.
I mean if you sit there and try to explain that to someone rationally, it's probably not going to make a ton of sense. I mean, I come from an engineering degree that is purely numbers. This stuff never ceases to blow my mind. Just how little we understand how the universe works in general.
Now we only need to find a way to accelerate/decelerate at 1g for that given time
@TrojanBlade:
There's a difference between something being probable, and finding actual evidence for it. Going by what you say, it's a really dangerous world view in my opinion. You're basicallys aying we don't need evidence, or knowledge, and should just go with gut instict.
Droopaloop
Banned
I was always under the impression that time for you remains the same. I always thought it was for the observers.
Like say someone is traveling at the speed of light away from earth for 30 years. To the observers from Earth, it appears they haven't in a stand still of sorts. To them though, they still travel at the speed of light for 30 years in their perspective... Like it's relativity altogether. From the observer time stops, but for the participant time passes normally.
Elfforkusu
Member
Satellite clocks actually have to factor in both time speeding up (from general relativity -- gravity effects, aka that one planet in Interstellar) and slowing down (from special relativity -- speed effects, aka what happens to our hypothetical explorers to these new planets). IIRC general relativity "wins" by a factor of 5 or 6 in the satellite case, but GPS wouldn't work without taking both into account.
I don't have a great layman explanation for relativity. The one that comes to mind is: the universe exists in 4D spacetime, and we are always moving through it at a constant "velocity" -- usually just in the "time" dimension. But the universe has a hard speed limit (c, the speed of light), and if you get too close to that speed limit moving through space, your "velocity" through time must slow in proportion.
BUT, this time dilation effect is local -- you (going super fast) perceive time as going slower, but from the outside it would be as if you're living in proportionally slow motion.
Not perfect, but maybe slightly helpful?
Caayn
Member
Watch this video by PBS Space Time: https://www.youtube.com/watch?v=EzZGPCyrpSU
They discuss five different propulsions types. Short answer,
no we don't have any feasible propulsions technologies to cover such distances.
Lovely Salsa
Banned
How will we know if life is there? If there's no way of finding that out without going there then whats the point
Whoopiedoo
Whoopiedoo
Elfforkusu
Member
It's arguably not really "new", but VASIMR (https://arstechnica.com/science/201...revolutionary-rocket-may-be-about-to-pay-off/) looks like it might finally happen, which would be a big step for manned travel within our solar system. But where interstellar travel is concerned, that "big step" is a baby step forward in a marathon.
Aside: since we've been spending a bare minimum on space tech since the 70s, it should come to no one's surprise that all the manned space propulsion plans are (still) built around nuclear power. You get what you pay for, which, after 40+ years, remains: bupkis.
In regards to FTL, warp, jump, wormholes: there are theories, but they are fantastical enough that I'm comfortable calling them "fantasy".
Linkstrikesback
Member
Also if any of these planets do have the elements to sustain life, even sending an unmanned craft to one of them could probably kick-start the process on that planet either way, if any small amount of earth bacteria or whatever make it from the shuttle to the planet which could be interesting in its own way.
So much of our daily life is spent online reading about events in places you will never realistically visit.
I've never visited CERN but I can appreciate the scientific discoveries from it.
I've never visited the ISS but I can submerge myself in studies conducted up there.
I still want to read about them to broaden my understanding of life. Saying 'whats the point, I'll never go' is incredibly narrow a view.
There was that emdrive which would be a substantial boost in theory, but it's very up-in-the-air - I'm not sure if it's been discredited yet, but it could well be with more experimentation. It wouldn't be an ftl drive mind you, but it would be a big improvement.
Lovely Salsa
Banned
No, Im saying if we cant find out if there is in fact life on it, then whats the point.
There are probably trillions of earthlike planets in the goldlock zone out there.
At least we know where to begin looking. maybe one day we'll send a probe there. Traveling at 90% the speed of light, a probe could reach there in under a century.
And hey, with the James Web Space Telescope next year, we can at least learn its major atmospheric chemical content to get a better idea of its potential for harboring life. It would be promising if one of these planets turn out to have an atmospheric makeup similar to that of Earth's.
Lovely Salsa
Banned
Will that telescope be able to tell if humans can breathe on the planet? That would be ace
Upcoming tech? Nope. There are plenty of ways to achieve velocities near the speed of light without breaking any physics, but all of them are huge engineering challenges that won't be viable for quite a while. There's some groundbreaking upcoming propulsion technology in the next 50 years with plasma and stuff, but none of it could really be used to travel beyond the solar system.
As for FTL travel, there are some very theoretical ideas which may or may not have a basis in reality which can achieve travel between distances at which it would take light farther to travel. One is to create a spacetime bridge (a wormhole), and send information or matter through it. Another is to manipulate the Einstein equations so that a sub-luminal ship could bend spacetime to act like it is moving FTL.
Instead of going into detail, I'll recommend a few videos.
https://www.youtube.com/watch?v=94ed4v_T6YM&ab_channel=PBSSpaceTime
https://www.youtube.com/watch?v=EzZGPCyrpSU
Always-honest
Banned
Yeah i just saw that Neil deGrasse Tyson bit. Amazing.Now we only need to find a way to accelerate/decelerate at 1g for that given time
foxuzamaki
Doesn't read OPs, especially not his own
This is great news
foxuzamaki
Doesn't read OPs, especially not his own
That's so close!
foxuzamaki
Doesn't read OPs, especially not his own
This really put me in the mood to play some elite dangerous again
Caayn
Member
That system is ~1440 light years farther away than TRAPPIST-1.
WaterAstro
Member
There's no way they can figure out if the planet is habitable just by it being the right size and in the Golden Zone.
The Earth is a miracle with millions of factors that went into its creation.
There's no way we can know until we get there.
The Earth is a miracle with millions of factors that went into its creation.
There's no way we can know until we get there.
eot
Banned
It won't be detectable. There are limits on how weak signals you can detect due to photon shot noise. At 40 ly the signal is going to be 10^36 times weaker. This means that unless you build a planet sized antenna (or larger, probably), the signal is so weak that it would never register (by that I mean it physically wouldn't deposit any energy into the antenna).
oh ok. thanks.
lastplayed
Member
As already mentioned, the faster you go the flatter the universe appears, so it wouldn't take you the full 40 years to get there even going less than the speed of light.
Apparently going close to the speed of light it'd take only 28 years to get to the Andromeda galaxy. Carl Sagan can explain it better than me.
Not exactly true.
When the James Webb Telescope launches we will be able to read atmospheric makeup and conditions to a higher degree than any instrument we've had, hence we would be able to better determine whether it is habitable.
For instance we could even potentially tell if their are gasses in the atmosphere that are the result of biological activity.
LookAtMeGo
Member
I love Carl Sagan. So the photons of light that reach us from Andromeda are only 28 years old even though they took 2.5 million years to get here. Whoa.
efyu_lemonardo
May I have a cookie?
I know I'm late to the party but HOLY FUCK
from NASA:
from NASA:
curls
Wake up Sheeple, your boring insistence that Obama is not a lizardman from Atlantis is wearing on my patience ð¤
Nikolai A. Kozyrev - Torsion Fields
Burkhard Heim - Heim Theory
Anatoly Akimov and Gennady Shipov
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