Find more projects

Planet Hunters

Main Project Information
Presented By Yale and Zooniverse
Goal Help scientists identify new planets.
Task Classify the brightness of a star as it changes over time.
Where Online only

Planet Hunters is a project from Zooniverse where citizen scientists help astronomers identify new planets.

Through data taken from the Kepler Spacecraft, citizens are helping scientists identify stars with possible planets in the Cygnus constellation. The Spacecraft takes brightness data every thirty minutes from over 150,000 stars so there is a lot to look at.

When planets pass in front of stars, the brightness of that star dips, which shows up on the light curves taken from Kepler. These patterns are not always easily recognized by computer algorithms, and in many cases, the human brain is actually more capable of identifying brightness dips.

How to Join

Getting started is easy with lots of help online and a quick tutorial. So start hunting today, and you might even identify a brand new planet!
Head to to learn more about the project, create a profile, and start hunting for planets.

The tutorial is quite helpful and can be found here:

Also, be sure to check out the Planet Hunter Talk page (, Twitter feed, and Facebook page to join in the discussion.

Social Media
Required Gear

A computer with Internet access.

Ideal Age Group College, Graduate students, Adults
Spend the Time indoors
Type of Activity Exclusively online, At school, At home
Media Mentions
and Publications
Tags astronomy, galaxy, online, planets, space, web, zooniverse
Project Updated 06/14/2018