There are black holes in the universe. Anything that passes their event horizon can't escape. The black hole is so hard to see that they get their name there. When material falls into a black hole it can give off a burst of X-rays which can be used to locate the hole.

This isn't always the case for black holes. They don't give off X-rays and are much harder to locate because they don't take in material. Members of the public are being invited to help search for black holes.

This simulation of a supermassive black hole shows how it distorts the starry background and captures light, producing a black hole silhouettes.
This simulation of a supermassive black hole shows how it distorts the starry background and captures light, producing black hole silhouettes. NASA’s Goddard Space Flight Center; background, ESA/Gaia/DPAC

Black hole hunters look for clues to the location of black holes. Black holes have very strong gravity and warp time because they are so dense. Light coming from stars behind them is made brighter by this bend.

Citizen scientists are invited to look for peaks of brightness. The first thing you need to do is understand what you are looking for in a graph, then you can help classify graphs that might indicate a black hole. The data was gathered from the SuperWASP survey.

According to one of the co-leads, the project could help identify important black holes in the future. None of the black holes we are looking for have been found. He said in a statement that the search should reveal how many black holes are hidden around stars.

Finding them is a huge task and it is not something we could do alone, so it's great that anyone with access to the internet will be able to get involved.

You can join the hunt by going to the project page.

There is a recommended video.