Odd radio circle

unexplained circular astronomical object detected only by radio waves

en-GB/ˈɒd ˈɹeɪdɪˌəʊ ˈsɜːkəl/
en-US/ˈɑd ˈɹeɪdiˌoʊ ˈsɝkəl/

دسته بندی ها:

astronomical object