Zvichienderana nekupisa uye hunyoro hwemhepo, mazaya echando anoumba makumi ezviuru zvezvimiro zvakasiyana. Mupfunga wemvura unopfeka tuhuruva tudiki, tunoomesa kuita makristasi eaizi. Mamorekuru emvura anokwira mune hexagonal (hexagonal) chimiro. Mhedzisiro yeiyi maitiro ndeye yakanakisa chando chechando chinodiwa nemunhu wese kubva paudiki.
Sinou ichangobva kuumbwa inorema kupfuura mweya, zvichiita kuti idonhe. Kudonha kuNyika kuburikidza nemhepo yakanyorova, mhute yemvura yakawanda inoomesa uye inovhara pamusoro pemakristasi. Maitiro ekuomesa chando chechando akarongeka. Kunyangwe ese mazaya echando ane hexagonal, mamwe ese ezvematanho awo anosiyana. Sezvambotaurwa pamusoro apa, izvi zvinokonzerwa nekupisa uye hunyoro hunoita chando chechando. Kumwe kusanganiswa kwezvinhu zviviri izvi kunobatsira pakuumbwa kwemaitiro ane "tsono" refu, asi vamwe vanokwevera mamwe maitiro anoyevedza.
(Jeriko, Vermont) akava munhu wekutanga kutora mufananidzo wechando chechando achishandisa maikorosikopu akaiswa pakamera. Muunganidzwa wake wemifananidzo 5000 yakashamisa vanhu nemhando isingafungidzirwe yekristaro yechando.
Muna 1952, masayendisiti kubva kuInternational Association of Classification Societies (IACS) yakagadzira hurongwa hunoisa chando chechando muzvikamu gumi zvinokosha. Iyo IACS system ichiri kushandiswa nhasi, kunyangwe mamwe masisitimu akaomarara atovepo. Kenneth Libbrecht, purofesa wefizikisi paCalifornia Institute of Technology, akaita tsvakiridzo yakadzama yekuti mamorekuru emvura anoumba sei makristasi echando. Mukutsvakurudza kwake, akawana kuti maitiro akaoma zvikuru anoshandurwa mumamiriro ekunze ane hunyoro. Dry air snowflakes inowanzova nemaitiro akareruka. Pamusoro pezvo, mazaya echando akadonha patembiricha ari pasi -22C anonyanya kuumbwa nemaitiro akareruka, nepo mapatani akaomesesa ari ega mumazaya echando anodziya.
Maererano nomusayendisiti weNational Center for Atmospheric Research muBoulder, Colorado, avhareji yemazaya echando ane . David Phillips, mukuru wezvemamiriro ekunze paEnvironment Conservancy muCanada, anoti huwandu hwemazaya echando akadonha kubva pavepo Pasi pano gumi achiteverwa nemazero makumi matatu nemana.