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Asteroid Hunters
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Any of the 2000 potentially dangerous asteroids for Earth can impact the future against our Planet with disastrous consequences. Asteroid Hunters (known Cazasteroides in Spanish) puts at the disposal of the citizenship a tool to collaborate in the protection of the Earth against the impact of asteroids.

Currently there is a population of 750,000 asteroids and each month about 2000 new objects are discovered. About 2% of the total number of asteroids are classified as NEAs (Near-Earth Objects) and about 10% -2000 are PHAs or potentially dangerous asteroids for the Earth, that is, asteroids with a non-zero probability of impact against our planet. The Minor Planet Center of the International Astronomical Union is the body that records the asteroid database, maintained with the observations of professional astronomers and amateurs. Researchers at the Universidad Politécnica de Madrid (UPM) and the Instituto de Astrofísica de Canarias (IAC) have developed an app that allows anyone, and in a friendly way, to help control the population of asteroids. It is a free application for mobile devices called “cazasteroides”. Being a asteroid hunter is simple, it only requires having the app installed (in its Android version, iOS or in a web browser) and visual acuity. The user sees in their mobile a sequence of images of the sky and marks those objects suspected of being asteroids – they move on the fixed background of stars. The detections are first filtered by the users themselves – through a voting system – and finally it will be a team of professional astronomers that verify the true nature of the objects detected. The application includes gamification techniques to make it more attractive to users, rewarding them with points for their actions. The project of Asteroid Hunters already has a large community of users and other large figures: the more than 6,420 users have added a total of 209,000 detections, 1,25 M votes cast, 3,700 known objects and 760 candidates, that is, there is a total of 760 objects that the MPC does not have cataloged and that for now have been approved as possible new asteroids. The final goal in the medium term is to have a worldwide network of telescopes that contribute their images and are part of this application so that, in a very fast and thanks to the collaboration of thousands of citizens, the population of dangerous objects can be controlled. “The visual acuity of young people will allow us to detect weaker, and therefore smaller, asteroids than with traditional image recognition algorithms. The key is to get thousands of citizens involved in the project. It is the task of all to protect the future of our planet and hunters will be our shield against objects that come very close to the Earth", comments Miquel Serra-Ricart, the astronomer coordinating the project.

Asteroid Hunters
How to participate:
Only a mobile phone is required, to download the app Android or iOS, or even from the computer's browser.
Needed equipment:
Internet.
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