NASA @NASA
Do you see arcs of light in this @NASAHubble image? This effect is called "gravitational lensing." A galaxy cluster in front is so massive, its gravity bends & magnifies light from a galaxy in the back, producing a kaleidoscope-like view. π π Look: https://t.co/ST5wjXC3zU https://t.co/pAYtNOEUch — PolitiTweet.org