People are posting stunning images of Mercury's rare transit across the sun

The transit of tiny planet Mercury across the sun happens only 13 times each century - and the internet is taking full advantage of documenting the spectacle.

During the transit, Mercury passes between the sun and Earth's line of sight, making the planet appear like a small black dot moving across the massive star.

The astronomical event goes from 7:12 a.m. EDT through 2:42 p.m. EDT on Monday, May 9, and it's visible from almost anywhere in the world.

Here are some of our favorite photos, videos, and GIFs we've seen on social media so far.

Warning: Do not look at the sun without adequate protective eye wear or solar filters, especially if you're using binoculars or a telescope!