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#1 Cheezdude

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Posted 17 March 2012 - 08:40 AM

Guess I gotta start a new one.  :beard:



#2 DancingBearly

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Posted 17 March 2012 - 09:00 AM

That going to take a while:coffee: Which star goes in first? How long to complete one gallaxy?:smile:

#3 Cheezdude

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Posted 17 March 2012 - 09:07 AM

Ok. We live in a galaxy called the Milky Way. At it's center is a super massive black hole called Sagittarius A.
The galaxy is a disk-shaped structure. Earth is located within the galactic plane of this disk, around two thirds
of the way out from the center, on the inner edge of a spiral-shaped concentration of gas and dust called the
Orion–Cygnus Arm. The Milky Way is a barred spiral galaxy 100,000–120,000 light-years in diameter containing
200–400 billion stars. Makes you feel small, doesn't it?  :beard:



#4 Cheezdude

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Posted 23 March 2012 - 07:46 AM

The most current estimate for the age of the Universe is about 13.7 billion years. Our Milky Way has been around for about 13.6 billion of those years, give or take 800 million years. The oldest stars in our the Milky Way are found in globular clusters, and the age of the galaxy is determined by taking the age of these stars, and then extrapolating the age of what preceded them. Though some of the constituents of the Milky Way have been around for a long time, the disk and bulge themselves didn’t form until about 10-12 billion years ago, and the bulge may have formed earlier than the rest of the galaxy.

#5 Cheezdude

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Posted 23 March 2012 - 07:57 AM

Our solar system, is located in the Orion-Cygnus arm of the Milky way galaxy. A spur in the outer part of the galaxy. It takes our solar system
approximately 250 million years to complete one orbit of the galaxy. So, we've orbited the galaxy about 20 times since our planet was formed.

#6 Cheezdude

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Posted 27 March 2012 - 07:54 AM

The idea of this post originally was to get us to think about the our size , compared to the galaxy, and the universe.
As a comparison, think of this. If you put a quarter on the ground, and think of that as the size of our solar system,
the entire north American continent would be roughly the size of the galaxy.

#7 TEO

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Posted 29 March 2012 - 04:26 AM

When gazing at the sky on a clear night what a speck we are comes to mind. Gazing into the seemingly endless blue during the day, sometimes peeking at the stars beyond the blue brings forth the same.

#8 Jabadoodle

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Posted 21 June 2012 - 02:23 AM

This gives some perspective. Amazing.



#9 melissaphish

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Posted 21 June 2012 - 07:37 PM

OMG Gary I love that video so much!!!

#10 Cheezdude

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Posted 22 June 2012 - 06:21 PM

Very cool jabadoodle! Thanks for posting that. :bigsmile:

#11 DeadFred

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Posted 10 July 2012 - 03:31 AM

We are so infinitesimal. And the universe is so beautiful!

#12 Like_Water

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Posted 18 July 2012 - 10:37 PM

I can dig it - - - -

#13 hoagie

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Posted 08 August 2012 - 11:38 PM

We are so infinitesimal. And the universe is so beautiful!


on the flip side, we are so unimaginable HUGE from the subatomic perspective...

#14 Cheezdude

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Posted 11 August 2012 - 07:29 AM

Here's another cool video. Gives some amazing perspective, on the size of the universe.


#15 Cheezdude

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Posted 11 August 2012 - 07:29 AM

Each glob of light, is a galaxy. Containing billions of stars.

#16 INarvi

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Posted 21 August 2012 - 01:24 AM

my mind -> :Blown:

#17 Cheezdude

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Posted 26 August 2012 - 12:24 AM

Check this out. http://scaleofuniverse.com/

#18 u.s.blues

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Posted 09 November 2012 - 04:07 PM

Check this out. http://scaleofuniverse.com/


that is a great perspective.

#19 hoagie

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Posted 09 November 2012 - 04:09 PM

When gazing at the sky on a clear night what a speck we are comes to mind. Gazing into the seemingly endless blue during the day, sometimes peeking at the stars beyond the blue brings forth the same.


The sky is not actually blue.

#20 Cheezdude

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Posted 21 November 2012 - 09:02 PM

The sky is not actually blue.


Ok, I respect your premise. But this is a philosophical discussion. Not a statement of actual fact.
Although for accuracy's sake, you are correct. I still like to think of the sky as "blue".

#21 Cheezdude

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Posted 21 November 2012 - 09:12 PM

So, in the latest issue of Discover, there's an interesting article about the Kepler space telescope, who's purpose is to discover planets around stars in our galaxy.
Data extrapolated from the mission so far, would suggest, there are more than 150 billion planets in our galaxy alone. Imagine how many galaxy's there could be,
and multiply times 150 billion. We can't even conceive of numbers that big. We may be able to compute it, or even write it down if we wanted. But to wrap your mind
around the scale of it, is impossible. At least for me. I do enjoy trying though.

#22 Cheezdude

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Posted 25 November 2012 - 08:02 AM

This is really cool. Thanks to Jwheelz for finding it.
http://workshop.chro...ents.com/stars/

#23 Mr_Pat

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Posted 25 November 2012 - 09:48 PM

Posted Image

#24 Cheezdude

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Posted 05 December 2012 - 07:05 AM

Awesome photo Mr Pat. Where's that from?

#25 Cheezdude

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Posted 12 January 2013 - 06:30 AM

The nearest star to us, is called Proxima Centauri. It is about 4.24 light years away. 

The fastest spaceship we've ever built, topped out at at just over 157,000 MPH.

At that speed, it would take about 17,000 years to get there. 

 

 

Pick up the latest National Geographic. Amazing issue, devoted to what makes us want to explore.  :bigsmile:



#26 Cheezdude

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Posted 24 January 2013 - 08:34 AM

The universe is bigger than you can imagine. But it's fun to keep dreaming. 



#27 Jabadoodle

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Posted 25 January 2013 - 04:34 AM

spaceyourface2.png



#28 Jabadoodle

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Posted 25 January 2013 - 04:38 AM

spaceyourface3.png



#29 Jabadoodle

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Posted 25 January 2013 - 04:46 AM

cmbtimelinefeesh.jpg



#30 hoagie

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Posted 25 January 2013 - 07:53 AM

Feesh!

#31 Jwheelz

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Posted 03 February 2013 - 07:16 PM

great thread, don't know why I've never been in this forum before



#32 hoagie

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Posted 03 February 2013 - 09:09 PM



#33 Cheezdude

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Posted 12 February 2013 - 08:21 AM

great thread, don't know why I've never been in this forum before

 

Thanks for stopping by. In a way, you've contributed. I copied this link, http://workshop.chro...ents.com/stars/ from one of your posts.  :bigsmile:



#34 Cheezdude

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Posted 21 February 2013 - 09:06 AM

700px-Multiverse_-_level_II.svg.png

 

Depiction of a multiverse of seven"bubble" universes, which are separate

spacetime continua, each having different physical lawsphysical constants,

and perhaps even different numbers of dimensions or topologies.



#35 Cheezdude

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Posted 15 April 2013 - 05:55 AM

So the multiverse theory is an idea I've been dwelling on for a while now. Yeah, our universe is unimaginably large.

Try and imagine several. Maybe an infinite number, of unimaginably large universes. 



#36 hippieskichick

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Posted 15 April 2013 - 09:37 AM

So the multiverse theory is an idea I've been dwelling on for a while now.

 

Watched a pretty interesting PBS show on this a little while back. Neat stuff. They've got a few good shows that actually break stuff down to a reasonably understandable level for the general pop (string theory, relativity, and the like). 



#37 Cheezdude

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Posted 28 November 2013 - 09:49 PM

Our Voyager spacecraft, have reached, and gone past the edge of our solar system. Launched in 1977, Voyager one and two,

represent mankind's first reach into interstellar space. Voyager one reached the heliopause on aug 25th 2012. The heliopause,

is the boundary of our solar system. It is where the solar wind, generated by our sun, meets interstellar space, and the two forces

equalize. The space craft took approximately 35 years to reach that point. Traveling at an average speed of 36,000 MPH. But as

exciting as that is, it would still take 40,000 years before it could reach our nearest  cosmic neighbor, Proxima Centauri. And we

will lose contact with them long before that. It's an interesting idea, that we have spaceships out there. Way out there. Almost two

light years away. 

Some interesting reading; http://en.wikipedia....iki/Heliosphere

 

Another fun page; http://wiki.answers....t_galaxy#slide1



#38 Catfish John

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Posted 08 December 2013 - 05:16 AM

I just ate a milky way :dinner1:  



#39 hoagie

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Posted 08 December 2013 - 04:22 PM

sun-crossing-rift-d1.jpg



#40 Cheezdude

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Posted 23 February 2014 - 09:50 PM

At some point in the next year, the black hole at the center of our galaxy, Sagittarius A, will dine on a gas cloud named, G2.

This will be the first time we have been aware of, and will be able to observe, anything that large interacting with Sgr A.

At that point, radio telescopes around the world, will focus on Sgr A, in an attempt to create a planet sized observatory,

called "Event Horizon telescope". Hopefully to observe, and record a black hole in action. The black hole itself, can never be

observed, because it's gravity is so strong, it traps even light. But rather the effects on the space around it will be observed. 



#41 Cheezdude

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Posted 31 March 2014 - 01:43 AM

I highly recommend watching Cosmos, with Neil Degrasse Tyson. He's talking about all this stuff. It's a great show.