It's focused on explaining the science of this awesome image so students can better understand what's going on. To learn more about gravitational lensing and the "Einstein Ring" seen here, go read the article below. It's short and very easy to understand!
Ancients used to ‘see’ the outline of animals and other well-known things as constellations in the night sky. Now astronomers have done much the same thing. But they’ve spotted a more distant — if totally modern — shape: a smiley face!