
NASA @NASA
The warped light in this @NASAHubble image is a prime example of gravitational lensing, which occurs when gravity from an object (in this case, a galaxy cluster) bends the light from a background galaxy before the light reaches the observer: https://t.co/N1vOse3B0L https://t.co/iuyTNlNfsO — PolitiTweet.org