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Gravity s Grin

links.ifttt.com/wf/click?upn=jGHDfwvrKDxaofcg5GVulqbC3Oy91WUF7wsbLYO8l-2FY-3D_ZK9XMfi1BLECKI0Cqx7-2FPc-2FHGjieojwgjC-2B2xBKvDh5QAbIxj6Vqhdvg-2FdUTFVfwzqXvpsQbSYFL97GmMVflBKX7sjYfGMdVun4iERblatRa5Nk... general theory of relativity, published over 100 years ago, predicted the phenomenon of gravitational lensing. And that's what gives these distant galaxies such a whimsical appearance, links.ifttt.com/wf/click?upn=jGHDfwvrKDxaofcg5GVulgUgC1JwkJc2mF5V6DPmK34-3D_ZK9XMfi1BLECKI0Cqx7-2FPc-2FHGjieojwgjC-2B2xBKvDh5QAbIxj6Vqhdvg-2FdUTFVfwzqXvpsQbSYFL97GmMVflBKX7sjYfGMdVun4iERblatQwyUexN... of X-ray and optical image data from the Chandra and Hubble space telescopes. Nicknamed the Cheshire Cat galaxy group, the group's two large elliptical galaxies are suggestively framed by arcs. ap111221.html of distant background galaxies lensed by the foreground group's total distribution of gravitational mass. Of course, that gravitational mass is dominated links.ifttt.com/wf/click?upn=jGHDfwvrKDxaofcg5GVultEfrFs4NH0I43-2FRDm7izQE-3D_ZK9XMfi1BLECKI0Cqx7-2FPc-2FHGjieojwgjC-2B2xBKvDh5QAbIxj6Vqhdvg-2FdUTFVfwzqXvpsQbSYFL97GmMVflBKX7sjYfGMdVun4iERblatQW7Vn.... The two large elliptical "eye" galaxies represent the brightest members of their own galaxy groups which are merging. Their relative collisional speed of nearly 1,350 kilometers/second heats gas to millions of degrees producing the X-ray glow shown in purple hues. links.ifttt.com/wf/click?upn=jGHDfwvrKDxaofcg5GVultlBYD7vMKJT5Pw7as8pfsk-3D_ZK9XMfi1BLECKI0Cqx7-2FPc-2FHGjieojwgjC-2B2xBKvDh5QAbIxj6Vqhdvg-2FdUTFVfwzqXvpsQbSYFL97GmMVflBKX7sjYfGMdVun4iERblatQq2rEj8... about galaxy group mergers? The Cheshire Cat links.ifttt.com/wf/click?upn=jGHDfwvrKDxaofcg5GVulpEDDta92azHU8-2B7RE1hxCQ-3D_ZK9XMfi1BLECKI0Cqx7-2FPc-2FHGjieojwgjC-2B2xBKvDh5QAbIxj6Vqhdvg-2FdUTFVfwzqXvpsQbSYFL97GmMVflBKX7sjYfGMdVun4iERblatT-2Fe... in the constellation Ursa Major, some 4.6 billion light-years away.

 

August 05, 2017

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Get a beautiful photo from NASA delivered to your email every day

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