Milky Way has 8.8 billion Earth-size, Goldilocks zone planets

[basketcase]

The findings also raise a blaring question, Marcy said: If we aren't alone, why is "there a deafening silence in our Milky Way galaxy from advanced civilizations?"
...

Considering the speed of light (and radio etc. signals) and the distances involved, it's absolutely no surprise.

- we've only been using radio for just over 100 years and there's only a few thousand stars withing that range so if they evolved at a similar rate, the odds would be pretty low.

- from much further away, the power from any signals would be dissipated over that distance to the point where it would be very hard to detect even if they had reached here.

 

[shack]

Yes radio communication is crap for interstellar communications, the power falls by the square of the distance.

Is that in the vacuum of space, as well?

 

[bishop]

Is that in the vacuum of space, as well?

Yes square of the distance is correct for vacuum, and probably only correct for vacuum.

 

[blackrock13]

Almost TEN BILLION isn't many?!
Tell you what. You start counting from one, and tell me when you get to ten billion.
LOL

It's all relative.

Tell you what, how about you start counting.

arthsky.org/space/milky-way-has-100-billion-planets-astronomers-say

http://www.zmescience.com/research/how-many-planets-are-in-the-milky-way-over-50-billion/

http://www.thestar.com/business/tec...y_way_at_least_50_billion_scientists_say.html

http://www.space.com/14200-160-billion-alien-planets-milky-galaxy.html

 

[blackrock13]

I have no idea, as usual, what you're talking about. The number was ONE IN FIVE. So, compared to the number of stars in the MW, this is most certainly NOT a small number.
Just stop.

I'll type slowly, relative to the total number of planets in the milky way, the number of Goldilocks planets is small and no big deal. If the median estimate of 100 million estimate is to be believed that one in ten. Almost the same, but actually fewer as we have in the solar system.

A real Baldrick moment if there was one.

 

[slowandeasy]

I am convinced that any civilization worth a damn will have abandoned our realm of existence with all it's asteroids, cosmic rays, and rainy days, and made a new home where all the other advanced civilizations have fled to,

Please elaborate.. Interesting conjecture.

 

[great bear]

Aliens were very interested in earth until one group subcribed to Terb and started to read Blackcock's posts. It was all downhill from there.

 

[slowandeasy]

Aliens were very interested in earth until one group subcribed to Terb and started to read Blackcock's posts. It was all downhill from there.

Not true.. believe it or not, ford nation exists in the alien population (need proof, just ask doug ford) and they support blackrock...

 

[great bear]

Not true.. believe it or not, ford nation exists in the alien population (need proof, just ask doug ford) and they support blackrock...

Ahhh, so the Greys do exist! We will have to change Blackcock's name to GreyCock.

 

[blackrock13]

"Considering how many planets in total the MW has, that's not that many goldilock worlds. "
Your statement remains absolutely unhelpful. First off, they didn't analyze ALL stars in the MW, so it doesn't take into account ALL planets in total. So, your reference is wrong, off the bat. Also, ONE IN FIVE of the stars in their selection criteria having these types of planets is a HUGE number. Almost TEN BILLION.
That a googol is smaller than a googolplex in no way makes a googol "not many".
Go educate yourself.

You do understand the term 'relative', as mentioned in post#208 and #30, right?

 

[blackrock13]

My bad, post #28 and post #30

Relative to the total number of planet as mentioned in more than one post. Not knowing as much as you clearly isn't the same as not knowing the meaning of 'relative'. I didn't make up the number, even offering sources for them.

 

[blackrock13]

Nothing that you posted had anything to do with the study, which did NOT include all of the stars in the galaxy.
In any case, saying "ten isn't that big compared to a hundred!" is a particularly obtuse statement, contributing nothing.
Want the last word again?

Oh, the old last word argument again, even though the truth is anything but that. Nothing like bringing in other unrelated pseudo facts into an unrelated argument, just to raise a dust storm around your accusations.

 

[blackrock13]

Son, you wouldn't know the truth if it bit you in the ass. Stop talking about things you know nothing about. You just look like an idiot. Free advice. "Pseudo facts"?! lol Suuuuuuuure.

The pseudo fact is that I always want or need to have the last word, which a quick look at any of the posts I contribute to would show is a lie. Feel free to stroke your ego or whatever else you stroke to feel good and think otherwise.

 

[oil&gas]

I think the only way we are ever going to be able to "visit" any of these planets, is through Spooky Action — the seemingly instantaneous interaction between entangled quantum particles.

The spooky action to reach any planets in the universe in an instant may work
fine if the star systems to visit are close by like within a few tens of light years.
If the nearest civilization to visit is one billion light years away which is still not
too distant relative to the rest of the observable universe farther out the spooky
action has to be able to let you travel back in time by hundreds of millions of
years. Otherwise you won't likely be able to pinpoint the present position of
the planet considering that little is known about galactic and star movements.
And of course there is always a chance that life on the destination planet
has long been wiped out by a hypernova nearby.

But quantum physics is an order of magnitude way over my head.

FAST

 

[bishop]

The spooky action to reach any planets in the universe in an instant may work
fine if the star systems to visit are close by like within a few tens of light years.
If the nearest civilization to visit is one billion light years away which is still not
too distant relative to the rest of the observable universe farther out the spooky
action has to be able to let you travel back in time by hundreds of millions of
years. Otherwise you won't likely be able to pinpoint the present position of
the planet considering that little is known about galactic and star movements.
And of course there is always a chance that life on the destination planet
has long been wiped out by a hypernova nearby.

Right now the problem with communications via quantum entanglement is that the you need to also have some correlation data, that changes along with the communication, in order to figure out the quantum communication, so you would need to use another form of communications to transmit the correlation data in order to make heads of tails of the quantum communication. Is is probably akin to being able to transmit an encrypted message instantly but then transmitting the deciphering key using plain vanilla speed of light communications.

 

[blackrock13]

The pseudo-fact was "Considering how many planets in total the MW has, that's not that many".
And the saying is "stroke" your ego, son, not "stoke". smh
You know, you can easily prove me wrong by just shutting up.

and as we all know that a mugs deal,. Damed of you do and damned if you don't.

 

[Aardvark154]

Not to worry,...the POPE will soon announce that the bible has said this all along

Please show me where it doesn't, or are you instead saying that the Mormons are correct?

 

[Aardvark154]

The findings also raise a blaring question, Marcy said: If we aren't alone, why is "there a deafening silence in our Milky Way galaxy from advanced civilizations?"

One theory that is intriguing, is that any civilization technologically advanced enough to communicate with us, has also developed nuclear weapons and self destructed. It's a depressing thought but certainly makes probabilistic sense.

Or that they have either gone past radio waves or haven't arrived there yet.

 

[shack]

The spooky action to reach any planets in the universe in an instant may work
fine if the star systems to visit are close by like within a few tens of light years.

Or if they learn to "jump" like in Battlestar Galactica.

 

[fuji]

Or if they learn to "jump" like in Battlestar Galactica.

We just need to get better at multi generational planning. We could launch a human populated ship at another solar system, even a distant one, if it was self sustaining. The humans that reached the destination would be the descendants of those who left earth, but that should be possible.

Aside from the technical challenges of building a sustainable ecosystem, there are some social engineering problems to ensure that the mission maintains its broad objectives across generations.

But given enough time to develop, that should be achievable.