Scientists may have proof of a ninth planet in our solar system after crowdsourcing some help.
A look at a few citizen science projects you can get involved in.
NASA has helped fund a website called Backyard Worlds, where citizen scientists can search for new planets.
This one is 5,000 times bigger than outcast Pluto and billions of miles farther away, scientists say.
In the distant reaches of the Kuiper Belt, dwarf planet Sedna could be in the gravitational pull of another unseen planet, nicknamed "Planet 9."