#bullet cluster

[spacewonder19]

Bullet Cluster in Carina © JWST+Chandra

[colorpicked-pride-flags-jwst]

Could you please do the bi flag from the bullet cluster? I love your blog!

Bisexual flag colorpicked from Bullet Cluster

[therealuniverse]

THE BULLET CLUSTER This is a composite image of the matter in the Bullet Cluster, a galaxy cluster also known as 1E 0657-56. The Bullet Cluster lies 3.4 billion light-years away and is one of the hottest known clusters of galaxies.

The cluster’s individual galaxies can be seen in the optical image data, but their total mass equates to far less than the mass of the cluster's two clouds of hot and luminous x-ray emitting gas shown in red. The distribution of dark matter within the cluster is shown by the blue hues, representing more mass than the optical galaxies and the x-ray gas combined. Dark matter is usually invisible to telescopic views, but in this case was mapped by gravitational lensing of the background galaxies. The bullet-shaped cloud of gas at the right was distorted as a shock front during a collision between two galaxy clusters that created the larger Bullet Cluster itself. The dark matter present has only interacted with the cluster gas through gravity. This clear separation of dark matter and gas clouds provide the best evidence to date that dark matter exists. -TEL How composite images are made: http://on.fb.me/YP4biZ http://apod.nasa.gov/apod/ap060824.html Composite Credit: X-ray: NASA/CXC/CfA/ M.Markevitch et al. Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/ D.Clowe et al. Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.

[chibinotan]

Bullet Cluster

[startswithabang]

The Most Important X-Ray Image Ever Taken Proved The Existence Of Dark Matter

“Yet the most important X-ray image of all time was an incredible surprise. This is the Bullet Cluster: a system of two galaxy clusters colliding at high speeds. As the gaseous matter inside collides, it slows, heats up, and lags behind, emitting X-rays. However, we can use gravitational lensing to learn where the mass is located in this system. he bending and shearing of light from background galaxies shows it's separated from the matter's and X-rays' location. This separation is some of our strongest evidence for dark matter.”

There are many different lines of evidence for dark matter, but one of the biggest contentions of those who disbelieve it is that a direct empirical proof of its existence is needed. If it exists in a large, diffuse halo around every galaxy, cluster, and component of large-scale structure in the Universe, you should be able to prove it. Starting more than 10 years ago, astronomers have been able to do just that. When galaxy clusters collide, the overwhelming majority of normal matter, residing in the intracluster medium, should smash together, heat up, and emit X-rays. It does! But the biggest deal is that the gravitational mass, reconstructed through lensing, doesn’t coincide with the normal matter.

There must be some other type of matter from the normal, baryonic matter. Ergo, dark matter. Here’s (IMO) the most important X-ray story of all-time.

[spinningblueball]

The Matter of the Bullet Cluster

Image Credit: X-ray: NASA/CXC/CfA/ M. Markevitch et al.;

Explanation: What's the matter with the Bullet Cluster? This massive cluster of galaxies (1E 0657-558) creates gravitational lens distortions of background galaxies in a way that has been interpreted as strong evidence for the leading theory: that dark matter exists within. Different recent analyses, though, indicate that a less popular alternative -- modifying gravity-- could explain cluster dynamics without dark matter, and provide a more likely progenitor scenario as well. Currently, the two scientific hypotheses are competing to explain the observations: it's invisible matter versus amended gravity. The duel is dramatic as a clear Bullet-proof example of dark matter would shatter the simplicity of modified gravity theories. For the near future, the battle over the Bullet cluster is likely to continue as new observations, computer simulations, and analyses are completed. The featured image is a Hubble/Chandra/Magellan composite with red depicting the X-rays emitted by hot gas, and blue depicting the suggested separated dark matter distribution.

[cosmicevanthorizon]

🌌 The Bullet Cluster 🌌, the collision of two separate galaxy clusters in the constellation of Carina. The "Bullet Cluster" name refers to the smaller subcluster moving away from the larger one. Studies on this cluster's gravitational lensing have led to the best evidence to date for the existence of dark matter. 📸Image Credit: X-ray: NASA/CXC/CfA/ M. Markevitch et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/ D.Clowe et al. Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.

⚛️ Science apparel: evanthorizon.com

[alxndrasplace]

(NASA)  The Matter of the Bullet Cluster Image Credit: X-ray: NASA/CXC/CfA/ M. Markevitch et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/ D.Clowe et al. Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.

What's the matter with the Bullet Cluster? This massive cluster of galaxies (1E 0657-558) creates gravitational lens distortions of background galaxies in a way that has been interpreted as strong evidence for the leading theory: that dark matter exists within. Different recent analyses, though, indicate that a less popular alternative -- modifying gravity-- could explain cluster dynamics without dark matter, and provide a more likely progenitor scenario as well. Currently, the two scientific hypotheses are competing to explain the observations: it's invisible matter versus amended gravity. The duel is dramatic as a clear Bullet-proof example of dark matter would shatter the simplicity of modified gravity theories. For the near future, the battle over the Bullet cluster is likely to continue as new observations, computer simulations, and analyses are completed. The featured image is a Hubble/Chandra/Magellan composite with red depicting the X-rays emitted by hot gas, and blue depicting the suggested separated dark matter distribution.