"A massive galaxy cluster known as SDSS J1038+4849 <a href=""http://www.cnn.com/2015/02/10/tech/space-smiley-face/index.html"">looks like a smiley face</a> in an image captured by the Hubble Telescope. The two glowing eyes are actually two distant galaxies. And what of the smile and the round face? That's a result of what astronomers call ""strong gravitational lensing."" That happens because the gravitational pull between the two galaxy clusters is so strong it distorts time and space around them."
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