[[File:CREDO Detector 2018-10-17 06.38.34.040 local time.png|thumb|Particle registered by CREDO detector|alt=]]
'''Cosmic-Ray Extremely Distributed Observatory (CREDO)''' is a scientific project initiated at the end of August 2016 by Polish scientists from the [[Institute of Nuclear Physics|Institute of Nuclear PhysicsInstitute_of_Nuclear_Physics_Polish_Academy_of_SciencesInstitute_of_Nuclear_Physics_Polish_Academy_of_Sciences]] in [[Kraków]] (researchers from the Czech Republic, Slovakia and Hungary also joined the project) whose purpose is the detection of [[cosmic ray]]s and the search for [[dark matter]].<ref>{{Cite web |url=https://credo.science/testnowy/credo-read-more/ |title=Cosmic Ray Extremely Distributed Observatory}}</ref> Its aim is to involve as many people as possible in the construction of a global system of cosmic ray detectors, from which it will be possible to examine the essence of dark matter. Having a camera and a [[GPS]] module, a [[smartphone]] works well as a detector of particles from space.<ref name="aasp">{{Cite journal |arxiv = 1709.05230|doi = 10.17721/2227-1481.7.23-29|title = Cosmic-Ray Extremely Distributed Observatory: a global cosmic ray detection framework|journal = Advances in Astronomy and Space Physics|volume = 7|issue = 1–2|pages = 23–29|year = 2017|last1 = Sushchov|first1 = O.|last2 = Homola|first2 = P.|last3 = Dhital|first3 = N.|last4 = Bratek|first4 = Ł.|last5 = Poznański|first5 = P.|last6 = Wibig|first6 = T.|last7 = Zamora-Saa|first7 = J.|last8 = Almeida Cheminant|first8 = K.|last9 = Alvarez Castillo|first9 = D.|last10 = Góra|first10 = D.|last11 = Jagoda|first11 = P.|last12 = Jałocha|first12 = J.|last13 = Jarvis|first13 = J. F.|last14 = Kasztelan|first14 = M.|last15 = Kopański|first15 = K.|last16 = Krupiński|first16 = M.|last17 = Michałek|first17 = M.|last18 = Nazari|first18 = V.|last19 = Smelcerz|first19 = K.|last20 = Smolek|first20 = K.|last21 = Stasielak|first21 = J.|last22 = Sułek|first22 = M.}}</ref><ref>{{Cite web | url=https://indico.ifj.edu.pl/event/182/overview |title = Cosmic-Ray Extremely Distributed Observatory 2017: The Anniversary Symposium (Aug 30) and Collaboration Meeting (Aug 31) (30-31 August 2017) · Institute of Nuclear Physics Polish Academy of Sciences (Indico)}}</ref><ref>{{Cite web | url=https://www.ncbj.gov.pl/seminaria/cosmic-ray-extremely-distributed-observatory-novel-astrophysical-potential-and-beyond |title = Cosmic-Ray Extremely Distributed Observatory: Novel astrophysical potential and beyond}}</ref>
