Explainer: What is the Einstein Cross visible in space?
An "Einstein cross" is a fascinating phenomenon that resembles a flower with four petals.
Source: dnaindia.com
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An "Einstein cross" is a fascinating phenomenon that resembles a flower with four petals.
What looks like a flower with four blue petals is actually an interesting phenomenon called an 'Einstein cross.'
An ultramassive black hole 30 billion times the mass of our Sun—one of the biggest ever found—was discovered due to a phenomenon known as gravitational lensing.