Astronomy news update from NASA :
Albert Einstein's 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, seen through the looking glass 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. The arcs are optical images of distant background galaxies lensed by the foreground group's total distribution of gravitational mass. Of course, that gravitational mass is dominated by dark matter. 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. Curiouser about galaxy group mergers? The Cheshire Cat group grins in the constellation Ursa Major, some 4.6 billion light-years away.

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Our new 'Word Of The Day' article update : sheepshank , n :
(nautical) A type of knot which is useful for shortening a rope or taking up slack without cutting it.

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Hello, Information from NASA NASA commercial cargo provider Northrop Grumman is scheduled to launch its next resupply mission to the International Space Station at 9:59 a.m. EDT Saturday, Nov. 2. NASA’s prelaunch coverage will air live on NASA Television and the agency’s website beginning Friday, Nov. 1.

October 25, 2019
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Hello guys, We're here with some new information from NASA :
Astronomers using data from NASA’s Chandra X-ray Observatory and other telescopes have put together a detailed map of a rare collision between four galaxy clusters.

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Hello, Information from NASA Students from Maine will have an opportunity next week to talk live with a NASA astronaut aboard the International Space Station.

October 25, 2019
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Hello, Information from NASA NASA is honoring John Culberson, former U.S. representative from Texas, with an agency Distinguished Public Service Medal. NASA Administrator Jim Bridenstine presented the award to Culberson during a presentation Friday at the 70th International Astronautical Congress in Washington.

October 25, 2019
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