Hanny’s Voorwerp

The Awl has the cheering story of Hanny van Arkel, a 24-year-old primary school teacher in the Netherlands, who one day idly clicked through from Brian May’s website to Galaxy Zoo, a site which posted a million galaxy photos and asked readers to help classify them.
When she spotted an unidentified blue smudge on one of the pictures, Hanny became the discoverer of what astronomers named Hanny’s Voorwerp, a cloud of gas being hit by an x-ray jet from an active black hole.
To have a go at finding your own astronomical phenomenon, go here.