LGWflyer
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The Space/Universe Thread

Sun Nov 13, 2011 3:40 am

After the Apophis, Voyager and Life in the Universe threads they're was loads of great discussion and feedback. So I thought why not just create a thread for space! I'll kick things off...

Planetary scientists have found that our Solar System use to have an extra planet. Today if it was still around it would have been one of the biggest planets in our Solar System, being roughly the same size as Uranus and Neptune. It also would have been an Ice Giant like them two. The planet still exists today but has no sun or orbit to follow and is just drifting endlessly through space on its own.

More info from Space.com:

http://www.space.com/13584-extra-giant-planet-solar-system.html


I hope to see some activity in this thread, always great learning new things!
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DeltaMD90
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RE: The Space/Universe Thread

Sun Nov 13, 2011 3:44 am

I just find it fascinating how time is so insignificant. When I am born to when I die, the universe changes 0.000000001%. It takes billions of years for anything to happen! Who knows if we'll be that lonely lost planet drifting away soon (and soon=millions of years!)

I think of all science, deep deep ocean frightens me the most but space is by far the most interesting!
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RE: The Space/Universe Thread

Sun Nov 13, 2011 3:45 am

It is well noticed that there are plenty of free floating planets and other strange things like brown dwarfs. One thing for is for sure, I don't think that missing planet is the "Nemesis" planet that people have been talking about.
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LGWflyer
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RE: The Space/Universe Thread

Sun Nov 13, 2011 4:06 am

Quoting DeltaMD90 (Reply 1):
I just find it fascinating how time is so insignificant. When I am born to when I die, the universe changes 0.000000001%. It takes billions of years for anything to happen! Who knows if we'll be that lonely lost planet drifting away soon (and soon=millions of years!)

Yeah the sun still has another 5 billion years left. I wonder why us humans live for so little!!! I don't think Earth will be the lost planet, it will be lost when the Sun turns into a red giant in 5 billion years time. But the Moon on the other hand... it is moving something like 12cm away from us a year, and one day they say it might disappear for good.  
Quoting DeltaMD90 (Reply 1):
I think of all science, deep deep ocean frightens me the most but space is by far the most interesting!

Yep, swimming in deep water looking down at the endless depth freaks me out! Im with you a 1000% on sticking with space DeltaMD90!!!

Quoting 2707200X (Reply 2):
It is well noticed that there are plenty of free floating planets and other strange things like brown dwarfs. One thing for is for sure, I don't think that missing planet is the "Nemesis" planet that people have been talking about.

To be honest I never knew that loan planets existed. The "Nemesis" planet is that what the 2012 conspiracy people think will hit the Earth...?
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RE: The Space/Universe Thread

Sun Nov 13, 2011 7:03 am

Quoting LGWflyer (Thread starter):
Planetary scientists have found that our Solar System use to have an extra planet. Today if it was still around it would have been one of the biggest planets in our Solar System, being roughly the same size as Uranus and Neptune. It also would have been an Ice Giant like them two. The planet still exists today but has no sun or orbit to follow and is just drifting endlessly through space on its own.

Predictions based on restricted "n-body problem" simulations need to be taken with a grain of salt. These only give probabilities, not certainties.

The early Solar System very likely would have been quite unstable, so the probability of another planet (or several) at an early stage is certainly non-zero. Then of course there is the Asteroid Belt, which may be the remains of a proto-planet that was torn apart during it's formation, due to gravitational effects from Jupiter.
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LGWflyer
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RE: The Space/Universe Thread

Sun Nov 13, 2011 8:38 pm

New ISS crew will be launching tonight. What a brilliant job it must be to stay on the ISS for a period of time.

Here is a link about it from Space.com:

http://www.space.com/13600-space-station-crew-soyuz-launch-today.html
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RE: The Space/Universe Thread

Sun Nov 13, 2011 9:59 pm

Quoting LGWflyer (Reply 3):
Quoting 2707200X (Reply 2):
It is well noticed that there are plenty of free floating planets and other strange things like brown dwarfs. One thing for is for sure, I don't think that missing planet is the "Nemesis" planet that people have been talking about.

To be honest I never knew that loan planets existed. The "Nemesis" planet is that what the 2012 conspiracy people think will hit the Earth...?

Isn't Nemesis a theoretical red dwarf star?
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RE: The Space/Universe Thread

Sun Nov 13, 2011 10:10 pm

Quoting LGWflyer (Reply 3):
To be honest I never knew that loan planets existed. The "Nemesis" planet is that what the 2012 conspiracy people think will hit the Earth...?
Quoting Silver1SWA (Reply 6):
Isn't Nemesis a theoretical red dwarf star?

It's Nibiru, and when you say "conspiracy people" they deserve all the negative stereotypes that go along with it. It's 'science' of completely dubious value. Read at your own sanity http://en.wikipedia.org/wiki/Nibiru_collision

Highlights: this planet will stop Earth's rotation with its gravity as it stops by, then pulls the Earth by the North Pole and resets its orbit (or some rubbish like that)
NASA built a telescope on the South Pole to observe this planet (which NASA had no part in the construction of the telescope)
The planet is hidden by the sun (funny, don't we orbit around the sun, meaning the planet would have to orbit as well to stay on the other side? AND come towards us? So it is spiraling at the same rate as we rotate and coming towards us? What a coincidence...
I even went to her website, talking about tsunamis hitting Denmark and stuff (sorry Danes!) I'd believe chemtrails over this garbage!!!
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RE: The Space/Universe Thread

Sun Nov 13, 2011 10:47 pm

Quoting DeltaMD90 (Reply 7):
Quoting LGWflyer (Reply 3):
To be honest I never knew that loan planets existed. The "Nemesis" planet is that what the 2012 conspiracy people think will hit the Earth...?
Quoting Silver1SWA (Reply 6):
Isn't Nemesis a theoretical red dwarf star?

It's Nibiru, and when you say "conspiracy people" they deserve all the negative stereotypes that go along with it. It's 'science' of completely dubious value. Read at your own sanity http://en.wikipedia.org/wiki/Nibiru_collision

Highlights: this planet will stop Earth's rotation with its gravity as it stops by, then pulls the Earth by the North Pole and resets its orbit (or some rubbish like that)
NASA built a telescope on the South Pole to observe this planet (which NASA had no part in the construction of the telescope)
The planet is hidden by the sun (funny, don't we orbit around the sun, meaning the planet would have to orbit as well to stay on the other side? AND come towards us? So it is spiraling at the same rate as we rotate and coming towards us? What a coincidence...
I even went to her website, talking about tsunamis hitting Denmark and stuff (sorry Danes!) I'd believe chemtrails over this garbage!!!


No, I'm thinking of the theory that our solar system is a binary system with two stars, our sun and a red dwarf star that hasn't been found yet, Nemesis, but acts on bodies in our solar system such as asteroids and is responsible for sending the large asteroids our way causing previous extinctions. Or something like that...
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LGWflyer
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RE: The Space/Universe Thread

Sun Nov 13, 2011 10:53 pm

Quoting DeltaMD90 (Reply 7):
I even went to her website, talking about tsunamis hitting Denmark and stuff (sorry Danes!) I'd believe chemtrails over this garbage!!!

Cheers for the info. Also its interesting to think what some people, consider will happen. Also to do with the 2012 bs, one of the things expected to wipe out the Earth is the solar flares. As we know it is a load of rubbish and NASA confirmed today there is no threat at all from the Sun's solar flares!

One problem exploring and finding stuff out about the Universe is all the conspiracy stories which go along with it. Once 2012 has come and gone, I bet they will start going on about 99942 Apophis as the "Nemesis"... when 2029 and 2036 approach...
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RE: The Space/Universe Thread

Mon Nov 14, 2011 12:10 am

Quoting Silver1SWA (Reply 8):
No, I'm thinking of the theory that our solar system is a binary system with two stars, our sun and a red dwarf star that hasn't been found yet, Nemesis, but acts on bodies in our solar system such as asteroids and is responsible for sending the large asteroids our way causing previous extinctions. Or something like that...

Yeah I was just responding about Nibiru stuff, but I'm glad you mentioned this one. When you say "theory" is it a scientific theory or the same kind of theory truthers use? I'm leaning towards the latter because it doesn't make much sense! lol
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RE: The Space/Universe Thread

Mon Nov 14, 2011 12:14 am

Quoting LGWflyer (Reply 3):
But the Moon on the other hand... it is moving something like 12cm away from us a year, and one day they say it might disappear for good

There is a show on the History channel name "The Universe". About 2 or 3 weeks ago they had a episode about the moon. In the episode they talked about what would happen if the earth losses the moon.

No moon - Faster rotation and higher winds
No moon = changing earth axis

Here is the youtube video of "The Universe" with the moon.
http://www.youtube.com/watch?v=6j43GCAHAHo&feature=related
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DeltaMD90
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RE: The Space/Universe Thread

Mon Nov 14, 2011 12:18 am

Quoting dragon-wings (Reply 11):
There is a show on the History channel name "The Universe". About 2 or 3 weeks ago they had a episode about the moon. In the episode they talked about what would happen if the earth losses the moon.

I think that we'd have the technology to move it by the time it floats away (which is probably thousands of years away.) I'd like to see how it looked at the time of the dinosaurs, I heard it was pretty big in the sky!
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RE: The Space/Universe Thread

Mon Nov 14, 2011 12:22 am

Quoting dragon-wings (Reply 11):

There is a show on the History channel name "The Universe". About 2 or 3 weeks ago they had a episode about the moon. In the episode they talked about what would happen if the earth losses the moon.

No moon - Faster rotation and higher winds
No moon = changing earth axis

That may of been the programme (The Universe is a great programme, which it all the time) I watched a while ago, which I learned about the Moon moving away from us gradually each year. Yeah the Earth would dramatically change without the moon! And also the night sky just wouldn't be the same without the brilliant looking Moon shining up there!

And thanks for the link!  
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RE: The Space/Universe Thread

Mon Nov 14, 2011 12:58 am

Quoting DeltaMD90 (Reply 10):
Quoting Silver1SWA (Reply 8):
No, I'm thinking of the theory that our solar system is a binary system with two stars, our sun and a red dwarf star that hasn't been found yet, Nemesis, but acts on bodies in our solar system such as asteroids and is responsible for sending the large asteroids our way causing previous extinctions. Or something like that...

Yeah I was just responding about Nibiru stuff, but I'm glad you mentioned this one. When you say "theory" is it a scientific theory or the same kind of theory truthers use? I'm leaning towards the latter because it doesn't make much sense! lol


Like most theories in astronomy, it started from someone who was written off as a wacko by the scientific community, but over time more and more scientists are starting to give it serious thought. I just watched a program on it. And I believe it was mentioned in an episode of "The Universe" as well.
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RE: The Space/Universe Thread

Mon Nov 14, 2011 1:55 am

Quoting Silver1SWA (Reply 14):
Like most theories in astronomy, it started from someone who was written off as a wacko by the scientific community, but over time more and more scientists are starting to give it serious thought. I just watched a program on it. And I believe it was mentioned in an episode of "The Universe" as well.

But surely, if we can observe stars billions of lightyears away, wouldn't we be able to detect this star? It couldn't be too far away (in relative terms, of course.)
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:13 am

Quoting DeltaMD90 (Reply 15):
Quoting Silver1SWA (Reply 14):
Like most theories in astronomy, it started from someone who was written off as a wacko by the scientific community, but over time more and more scientists are starting to give it serious thought. I just watched a program on it. And I believe it was mentioned in an episode of "The Universe" as well.

But surely, if we can observe stars billions of lightyears away, wouldn't we be able to detect this star? It couldn't be too far away (in relative terms, of course.)

Yeah, and that's the biggest issue. But they're saying it's too small and too dim. It also has to do with its orbit with the sun and how it swings out huge distances and it gets close enough to have large effects on the solar system once overy x million years. I was half paying attention to the program so the details are fuzzy. Working right now so I can't do the research to give you the exact story.
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connies4ever
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:14 am

Quoting Silver1SWA (Reply 8):
No, I'm thinking of the theory that our solar system is a binary system with two stars, our sun and a red dwarf star that hasn't been found yet, Nemesis, but acts on bodies in our solar system such as asteroids and is responsible for sending the large asteroids our way causing previous extinctions. Or something like that...

It would need to be a very dim red dwarf to have escaped detection with existing capabilities. Even a brown drwarf would probably have been located by radio telescopes if not optically.

Quoting DeltaMD90 (Reply 10):
Yeah I was just responding about Nibiru stuff, but I'm glad you mentioned this one. When you say "theory" is it a scientific theory or the same kind of theory truthers use? I'm leaning towards the latter because it doesn't make much sense! lol

I'm thinking truthers. Where's the data ?
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:25 am

Wikipedia is our friend: http://en.wikipedia.org/wiki/Nemesis_(hypothetical_star)

I'll admit, it makes a little more sense, and I can see this as a viable theory using the technology of decades ago, but with our current technology, I think it would be detectable by now.
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:28 am

Quoting DeltaMD90 (Reply 15):
But surely, if we can observe stars billions of lightyears away, wouldn't we be able to detect this star? It couldn't be too far away (in relative terms, of course.)

Not unless it's bright enough to be seen. It's just like the Sun and the other stars - you can't see them during the day because the Sun is too bright.

That being said, I'd love to see a binary sunset. With some Star Wars music playing in the background. 

  
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:34 am

Quoting GAIsweetGAI (Reply 19):
That being said, I'd love to see a binary sunset. With some Star Wars music playing in the background. 

I think it would be cooler having a red colored sun and a blued colored sun set! And during certain times, the world would be more red and other times more blue, and maybe even purple??
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:58 am

Would have been easier if that star was the size of VY Canis Majoris... only a billion times bigger than our Sun. Would be a bit easier to find...     
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RE: The Space/Universe Thread

Mon Nov 14, 2011 3:18 am

Quoting LGWflyer (Reply 21):
Would have been easier if that star was the size of VY Canis Majoris... only a billion times bigger than our Sun. Would be a bit easier to find...     

That beast is ridiculous. I'd hate to be around it when it turns into a supernova! What if the big bang was just a big supernova, and there are millions of them 10^10000 km away? Hmm...   
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RE: The Space/Universe Thread

Mon Nov 14, 2011 3:22 am

Quoting DeltaMD90 (Reply 22):
That beast is ridiculous. I'd hate to be around it when it turns into a supernova! What if the big bang was just a big supernova, and there are millions of them 10^10000 km away? Hmm...

Yes quite amazing, and to think its the biggest one we know. There might be ones double or triple the size! Yeah same here, it is very lucky we are not close because it will wipe out part of the Universe its at. Even stars and planet a lightyear away will be effected. And this is mostly like to happen in only a 100,000 years, not long for space terms.
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RE: The Space/Universe Thread

Mon Nov 14, 2011 3:24 am

Quoting DeltaMD90 (Reply 20):
I think it would be cooler having a red colored sun and a blued colored sun set! And during certain times, the world would be more red and other times more blue, and maybe even purple??

Oh, that probably would be cool... And how about a pulsar really close? (or would that look too much like a night club?)

  
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RE: The Space/Universe Thread

Mon Nov 14, 2011 3:26 am

Quoting GAIsweetGAI (Reply 19):
Not unless it's bright enough to be seen. It's just like the Sun and the other stars - you can't see them during the day because the Sun is too bright.

If you know where to look in the sky, you can see Venus during the day when it is at quadrature (Sun-Earth-Venus form a right angle). It's difficult to locate but doable.
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RE: The Space/Universe Thread

Mon Nov 14, 2011 4:03 am

Quoting GAIsweetGAI (Reply 24):
Oh, that probably would be cool... And how about a pulsar really close? (or would that look too much like a night club?)

that would be cool, except for the x-rays shooting out at us!     
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RE: The Space/Universe Thread

Mon Nov 14, 2011 7:52 am

Here is the episode "The Sun's Evil Twin" (Nemesis) on the TV show "The Universe"

http://www.youtube.com/watch?v=EL4IDp0ro6Q&feature=related

PS: I LOVE THIS SHOW!

[Edited 2011-11-13 23:54:53]
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connies4ever
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RE: The Space/Universe Thread

Mon Nov 14, 2011 7:57 am

Quoting GAIsweetGAI (Reply 24):
Quoting DeltaMD90 (Reply 20):
I think it would be cooler having a red colored sun and a blued colored sun set! And during certain times, the world would be more red and other times more blue, and maybe even purple??

Oh, that probably would be cool... And how about a pulsar really close? (or would that look too much like a night club?)

While decidedly cool, it might have some serious implications for evolution.

We see best in yellow light, as that is the part of the spectrum where the Sun's light is strongest. Conversely, we see poorly in red light, where the Sun's emissions are weak --also violet. If it was the case that we were in a binary system with both a red and a blue star, who's to say what that would imply for our vision, and obviously for all the other creatures ? Would we be optimized to see well in red/infrared and blue/violet light, and poorly elsewhere, for example ?
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RE: The Space/Universe Thread

Mon Nov 14, 2011 1:03 pm

Quoting connies4ever (Reply 28):
We see best in yellow light, as that is the part of the spectrum where the Sun's light is strongest. Conversely, we see poorly in red light, where the Sun's emissions are weak --also violet. If it was the case that we were in a binary system with both a red and a blue star, who's to say what that would imply for our vision, and obviously for all the other creatures ? Would we be optimized to see well in red/infrared and blue/violet light, and poorly elsewhere, for example ?


There are optimizations for various colors even with yellow being the dominant color for our Sun. Various insects, for example, are sensitive to the ultraviolet range. Some snakes are very sensitive to infrared. The other thing to consider is that even though a star may have a certain "color," creatures would rarely look directly at their sun; it's reflected light that matters. The reflected light will vary based on what's illuminating it, but it also depends on the chemical composition and construction of the material that's reflecting it. It seems like there's still plenty of opportunity for diverse color sensitivity for various "colors" of stars.
 
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RE: The Space/Universe Thread

Mon Nov 14, 2011 2:29 pm

Quoting dragon-wings (Reply 27):
Here is the episode "The Sun's Evil Twin" (Nemesis) on the TV show "The Universe"

http://www.youtube.com/watch?v=EL4IDp0ro6Q&feature=related

PS: I LOVE THIS SHOW!

[Edited 2011-11-13 23:54:53]


That's the program I watched! Dunno why I didn't realize it was The Universe. I love that show!
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