Roughly one hundred billion galaxies are scattered throughout our observable Universe, each a glorious system that might contain billions of stars. Many are remarkably beautiful, and the aim of Galaxy Zoo is to study them, assisting astronomers in attempting to understand how the galaxies we see around us formed, and what their stories can tell us about the past, present and future of our Universe as a whole. Are you an educator? Would you like to use Galaxy Zoo with a group of students? The Navigator is an interactive tool that allows groups to classify galaxies together and then investigate galaxy characteristics. Zoo Teach is where educators can share lessons, resources and that compliment the citizen science projects that are part of the Zooniverse.

Measure and Map Our Galaxy: The Milky Way Project needs your help looking through tens of thousands of images from the Spitzer Space Telescope. By telling us what you see in this infrared data, we can better understand how stars form. The scale of this project necessitates group participation. We need the help of the public to classify the thousands of images we have on file. If all 900,000 Zooniverse members classified a few images, this project would be done in no time!

The goal of the Moon Zoo website is "to provide detailed crater counts for as much of the Moon's surface as possible." On the website, interested parties can help out with this effort by examining images of the moon's surface and providing feedback to be used by the team of researchers in charge of the Moon Zoo project. First-time visitors should click on the "How To Take Part" for a tutorial that will help determine which project they might be best suited for. Visitors who wish to take part in the project will need to register on the website, and that process only takes a few minutes. Moving on, the website has an online forum where users can trade information as well as a blog.

Help scientists recover worldwide weather observations made by Royal Navy ships around the time of World War I. These transcriptions will contribute to climate model projections and improve a database of weather extremes. Historians will use your work to track past ship movements and the stories of the people on board.

On December 16, 2010, the Zooniverse launched the original Planet Hunters to enlist the public's help to search data from the NASA's Kepler spacecraft for the characteristic drop in light due to an orbiting extrasolar planets (exoplanets) crossing in front of their parent stars. Back then we didn't know what we would find. The project was a gamble on the ability of human pattern recognition to beat machines just occasionally and spot the telltale dip from a transiting planet that was missed by automated routines looking for repeating patterns. It may have been the case that no new planets were discovered and that computers had the job down to a fine art. The gamble paid off. The original Planet Hunters project discovered a bounty of unknown planet candidates and several confirmed planets, resulting from the efforts of nearly 300,000 volunteers worldwide.

Solar scientists need you! Help them spot explosions on the Sun and track them across space to Earth. Your work will give astronauts an early warning if dangerous solar radiation is headed their way. And you could make a new scientific discovery.