To: vikingd00d
"They said as they looked down their noses and chuckled softly".
2 posted on
08/21/2006 6:18:23 PM PDT by
muawiyah
To: vikingd00d
...but then learned it was only Chocolate City!
To: vikingd00d; SunkenCiv
4 posted on
08/21/2006 6:19:21 PM PDT by
GeronL
(flogerloon.blogspot.com -------------> Rise of the Hate Party)
To: vikingd00d
NASA Finds Direct Proof of Dark MatterHow did they find it? CAT scans of Howard Dean, Al Gore, and Michael More?
5 posted on
08/21/2006 6:23:08 PM PDT by
ConservaTexan
(February 6, 1911)
To: vikingd00d
6 posted on
08/21/2006 6:24:31 PM PDT by
My2Cents
(A pirate's life for me.)
To: vikingd00d
1E 0657-56: NASA Finds Direct Proof of Dark Matter
 |
| Credit: X-ray: NASA/CXC/CfA/M.Markevitch et al.; Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/D.Clowe et al. |
|
|
JPEG (479 kb) |
Tiff (9.2 MB) |
PS (2.8 MB) |
|
This composite image shows the galaxy cluster 1E 0657-56, also known as the "bullet cluster." This cluster was formed after the collision of two large clusters of galaxies, the most energetic event known in the universe since the Big Bang.
Hot gas detected by Chandra in X-rays is seen as two pink clumps in the image and contains most of the "normal," or baryonic, matter in the two clusters. The bullet-shaped clump on the right is the hot gas from one cluster, which passed through the hot gas from the other larger cluster during the collision. An optical image from Magellan and the Hubble Space Telescope shows the galaxies in orange and white. The blue areas in this image show where astronomers find most of the mass in the clusters. The concentration of mass is determined using the effect of so-called gravitational lensing, where light from the distant objects is distorted by intervening matter. Most of the matter in the clusters (blue) is clearly separate from the normal matter (pink), giving direct evidence that nearly all of the matter in the clusters is dark.
The hot gas in each cluster was slowed by a drag force, similar to air resistance, during the collision. In contrast, the
dark matter was not slowed by the impact because it does not interact directly with itself or the gas except through gravity. Therefore, during the collision the dark matter clumps from the two clusters moved ahead of the hot gas, producing the separation of the dark and normal matter seen in the image. If hot gas was the most massive component in the clusters, as proposed by alternative theories of gravity, such an effect would not be seen. Instead, this result shows that dark matter is required.
| Fast Facts for 1E 0657-56: |
| Credit |
X-ray: NASA/CXC/CfA/M.Markevitch et al.; Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/D.Clowe et al. |
| Scale |
Image is 7.5 x 5.4 arcmin |
| Category |
Groups & Clusters of Galaxies |
| Coordinates (J2000) |
RA 06h 58m 19.85s | Dec -55' 56" 29.40º |
| Constellation |
Carina |
| Observation Dates |
2004: Aug 10, 11, 14, 15, 17, 19, 24, 25 |
| Observation Time |
140 hours |
| Obs. IDs |
5355-58, 5361, 4984-86 |
| Color Code |
Energy (X-ray: Pink; Optical: White/Orange; Lensing Map: Blue) |
| Instrument |
ACIS |
| Also Known As |
The Bullet Cluster |
| Distance Estimate |
About 3.4 billion light years |
| Release Date |
August 21, 2006 |
|
7 posted on
08/21/2006 6:27:23 PM PDT by
Mark Felton
("Your faith should not be in the wisdom of men, but in the power of God.")
To: vikingd00d
10 posted on
08/21/2006 6:34:04 PM PDT by
Coyoteman
(I love the sound of beta decay in the morning!)
To: vikingd00d
"We've closed this loophole about gravity, and we've come closer than ever to seeing this invisible matter," Clowe said.
I would not bet my inheritance on that.
To: vikingd00d
If an inch represents the difference in the knowledge of Kepler and Galileo and todays observers, then a miles represents how much more knowledge there must be before we begin to explain it all. We may never travel that mile.
24 posted on
08/21/2006 6:55:15 PM PDT by
RobbyS
( CHIRHO)
To: betty boop; Alamo-Girl; cornelis
Hmmmm... Light matter/energy vs. dark matter/energy...
29 posted on
08/21/2006 7:01:25 PM PDT by
hosepipe
(CAUTION: This propaganda is laced with hyperbole.)
To: vikingd00d
BuMpiTy, BuMp, BuMp, ...BOOM!
32 posted on
08/21/2006 7:07:29 PM PDT by
spunkets
To: vikingd00d
collision of two large clusters of galaxies
If the universe is expanding (Big Bang) how could clusters COLLIDE, let alone how could GALAXIES that have been blown apart, collide? Hmmmm...
To: vikingd00d
All I know is that there is a bin for the dark matter, one for the gray matter and one for the white matter. If I mix 'em up, she won't do the laundry 'til I fix it.
To: vikingd00d
Watch out for the "Crazy Eddie Probe".....
47 posted on
08/21/2006 8:28:23 PM PDT by
Empireoftheatom48
(God bless our troops!! Our President and those who fight against the awful commie, liberal left!!)
To: vikingd00d
49 posted on
08/21/2006 8:33:30 PM PDT by
CurlyBill
(Democratic Party Agenda ------> Emasculate America)
To: vikingd00d
Now if they can only find
"What's the matter?"
when talking to their wife/girlfriend. Then they would really be on to something.
51 posted on
08/21/2006 8:41:30 PM PDT by
Boiler Plate
(Mom always said why be difficult, when with just a little more effort you can be impossible.)
To: vikingd00d
53 posted on
08/21/2006 8:58:51 PM PDT by
Bender2
(Gad! The inmates have control... And I'm trying to quit smoking!)
To: GeronL; Swordmaker; FairOpinion
59 posted on
08/21/2006 10:06:20 PM PDT by
SunkenCiv
(updated my FR profile on Thursday, August 10, 2006. https://secure.freerepublic.com/donate/)
60 posted on
08/21/2006 10:12:27 PM PDT by
SunkenCiv
(updated my FR profile on Thursday, August 10, 2006. https://secure.freerepublic.com/donate/)
To: vikingd00d
The concentration of mass is determined using the effect of so-called gravitational lensing, where light from the distant objects is distorted by intervening matter.If dark matter only interacts through gravity, what is the light coming from to determine where the dark matter is located?
Sounds like there are still research opportunities here.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson
