When looking to study the most distant objects in the Universe, astronomers often rely on a technique known as Gravitational Lensing. Based on the principles of Einsteinís Theory of General Relativity, this technique involves relying on a large distribution of matter (such as a galaxy cluster or star) to magnify the light coming from a […]
The post Thanks to a Gravitational Lens, Astronomers Can See an Individual Star 9 Billion Light-Years Away appeared first on Universe Today.


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