Celestia Forums

Ok ok it was only a joke!!!

A Futile Question...

"How can I SEE dark matter and dark energy in Celestia???"

They say that in Question lies an answer... in this case, they meant litteraly!

Anyway, you can't see it because it's black...

...and yes, we are aware it's only a joke.

Edil wrote:Ok ok it was only a joke!!! :lol:

Why?;-)

In version 4.3 of Celestia, we shall have the microwave background data implemented, the MAP and PLANCK satellites are in orbit and determine in perfect simulation Omega_Lambda versus Omega_matter...

On the other hand, version 4.3 will also have high z Supernovae of Type Ia blowing off regularly with a universal lightcurve.

Keen Celestia users may then find out about dark energy easily;-).

Also the evidence for dark matter may be simulated in galaxies...

Bye Fridger

PS: Meanwhile, I recommend the more serious among the Celestians to look into the brandnew, beautiful original papers of the WMAP collaboration:
http://lambda.gsfc.nasa.gov/product/map/map_bibliography.html

t00fri wrote:
Bye Fridger

PS: Meanwhile, I recommend the more serious among the Celestians to look into the brandnew, beautiful original papers of the WMAP collaboration:
http://lambda.gsfc.nasa.gov/product/map/map_bibliography.html

Are you implying that I'm not a serious Celestian user? Don't forget that the wise philosofer said once that "The great truths are said in joke!!!".

Now more seriously, I was reading news from Nasa related to the photo of the early universe were it was said that the universe is compose of; 4% atoms "visible matter", 23% dark matter and 73% dark energy.

Here are some interesting sites related to the topic:

http://imagine.gsfc.nasa.gov/docs/ask_a ... atter.html
http://cdms.berkeley.edu/
http://xrtpub.harvard.edu/xray_astro/dark_matter.html
http://www.sciencedaily.com/releases/20 ... 224136.htm
http://snap.lbl.gov/brochure/

Best regards

edil wrote:Are you implying that I'm not a serious Celestian user? Don't forget that the wise philosofer said once that "The great truths are said in joke!!!".

I am never implying anything about people that I know nothing about.

Now more seriously, I was reading news from Nasa related to the photo of the early universe were it was said that the universe is compose of; 4% atoms "visible matter", 23% dark matter and 73% dark energy.

Yes in scientific nomenclature this means Omega_Lambda (Dark energy density) 0.73, Omega_matter ~0.27.
One main issue about the exciting new MAP results concerns the ERROR of these statements!

Here are some interesting sites related to the topic:

http://imagine.gsfc.nasa.gov/docs/ask_a ... atter.html
http://cdms.berkeley.edu/
http://xrtpub.harvard.edu/xray_astro/dark_matter.html
http://www.sciencedaily.com/releases/20 ... 224136.htm
http://snap.lbl.gov/brochure/

This is mainly popular reading material. My reference above concerned the 2 day old /original/ scientific papers of the WMAP collaboration who have opened up a new dimension of knowledge in this aerea...To this aspect my adjective "more serious" was devoted.

Another amazing result is that the age of the universe has been determined with 1% accuracy! There is an tight new upper bound of the average neutrino mass. There is vast new info about models of inflation in early cosmology....

Bye Fridger

If you do put it in, make sure I can turn it off. I don't want all that dark matter blocking out my lovely 128k DDS Earth texture.

Sum0 wrote:If you do put it in, make sure I can turn it off. I don't want all that dark matter blocking out my lovely 128k DDS Earth texture.

Jokes cannot be turned off, sorry;-)

The other day I saw a nice TV thing: a well-done simulation of how we would gradually sense a black hole moving into our solar system...

You want me to switch this off too I guess;-). Might as well "block out your lovely 128k DDS Earth texture"...

Bye Fridger

Well if I decide to model a nice texture for the milky way we will have all the dark matter ever needed out on the outer frindges...Suppose I could use M31 for the milky way...Now to get it done...Thats the dilemma...I might wait till stars can be plotted past the 16k barrier...hmmm what if stars could be plotted using the same format dsc files use ???

Ras',

Remember that the thing about Dark Matter is that it can't be seen. That makes it just a little hard to draw

So far as I know, the only visual effect that anyone has been able to detect so far is gravitational lensing. That'd take some source code modifications in Celestia to distort what's on the other side of the galaxies in your line of sight. Unlike other gravitational effects, I think this one actually might be compatible with Celestia's design philosophy!