#Nasa picture of the day august 24 2010 Patch
#Nasa picture of the day august 24 2010 full

The clear separation of dark matter and gas clouds is considered direct evidence that dark matter exists.

But the dark matter present has not interacted with the cluster gas except by gravity. In a text book example of a shock front, the bullet-shaped cloud of gas at the right was distorted during the titanic collision between two galaxy clusters that created the larger bullet cluster itself.

Otherwise invisible to telescopic views, the dark matter was mapped by observations of gravitational lensing of background galaxies. Representing even more mass than the optical galaxies and x-ray gas combined, the blue hues show the distribution of dark matter in the cluster. A mere 3.4 billion light-years away, the bullet cluster's individual galaxies are seen in the optical image data, but their total mass adds up to far less than the mass of the cluster's two clouds of hot x-ray emitting gas shown in red. The matter in galaxy cluster 1E 0657-56, fondly known as the 'bullet cluster', is shown in this composite image. Optical: NASA/STScI Magellan/U.Arizona/D.Clowe et al. Lensing Map: NASA/STScI ESO WFI Magellan/U.Arizona/ D.Clowe et al.

#Nasa picture of the day august 24 2010 full

Still, the detailed information available from clusters of galaxies like Abell 1689 gives hope that one day full solutions will be found that will not only fully reveal the dark matter in clusters, but also reveal the amounts of dark energy in the universe needed to lie along the line of sight to the distant arcs.Ĭomposite Credit: X-ray: NASA/CXC/CfA/ M.Markevitch et al. Now Abell 1689 remains enigmatic because the arcs are so numerous and diverse that no single dark matter model has emerged that can explain them all and still remain consistent with dark matter models needed to constrain their motion. Computer analyses of the placement and smoothness of these arcs indicate that in addition to the matter in the galaxies you can see, the cluster must also contain a significant amount of dark matter such as the model digitally superposed in purple. A close inspection, however, shows that many background galaxies are strangely magnified and distorted into long curving arcs by the gravitational lens deflections of the cluster.

#Nasa picture of the day august 24 2010 Patch

To start, almost every fuzzy yellow patch in the above image is an entire galaxy. What's the matter with this cluster of galaxies? To find out what forms matter takes in the Abell 1689 cluster requires not only deep images from telescopes like the Hubble Space Telescope, but detailed computer modeling as well. Where teams ranked No.Credit: NASA, ESA, E. Time will tell where Utah, which is the defending Pac-12 champion, will finish the season. Seven times, those teams finished in the top 10 - 2018 (Oklahoma No. 7 in the preseason, in 20 (Iowa State and Penn State), finished unranked.įrom 2009 to 2019, every team that started out No. Well, the last two teams that were ranked No. Over the past 15 years, how have teams that ranked No. 3 at Florida of the SEC and will face No. 7 in The Associated Press poll.īut it’s not about where you start, it’s about where you finish. A small market town in Nidderdale in the Borough of Harrogate, North Yorkshire, England, on the River Nidd. Utah earned its highest preseason ranking this month when it debuted at No. Picture of the Day AugTAKE A SEAT Photograph by Emily Harriet Stunning view from the top of a large hill in Pateley Bridge.