Web

Unidentified Flying Objects: What We Know | Britannica

Unidentified flying objects (UFOs) are airborne objects—or optical phenomena that seem like airborne objects—that an onlooker is unable to identify. UFOs first became a major subject of public interest after World War II, possibly sparked by the development of rocket technology.

https://www.britannica.com/story/unidentified-flying-objects-what-we-know

Unidentified Flying Objects: What We Know | Britannica <body> <h1> Array ( [0] => ynidentified flying objects: what we know | britannica [1] => hnidentified flying objects: what we know | britannica [2] => jnidentified flying objects: what we know | britannica [3] => inidentified flying objects: what we know | britannica [4] => 8nidentified flying objects: what we know | britannica [5] => 7nidentified flying objects: what we know | britannica [6] => ubidentified flying objects: what we know | britannica [7] => umidentified flying objects: what we know | britannica [8] => ujidentified flying objects: what we know | britannica [9] => uhidentified flying objects: what we know | britannica [10] => uhidentified flying objects: what we know | britannica [11] => unudentified flying objects: what we know | britannica [12] => unjdentified flying objects: what we know | britannica [13] => unkdentified flying objects: what we know | britannica [14] => unodentified flying objects: what we know | britannica [15] => un9dentified flying objects: what we know | britannica [16] => un8dentified flying objects: what we know | britannica [17] => unisentified flying objects: what we know | britannica [18] => unixentified flying objects: what we know | britannica [19] => unicentified flying objects: what we know | britannica [20] => unifentified flying objects: what we know | britannica [21] => unirentified flying objects: what we know | britannica [22] => unieentified flying objects: what we know | britannica [23] => unidwntified flying objects: what we know | britannica [24] => unidsntified flying objects: what we know | britannica [25] => uniddntified flying objects: what we know | britannica [26] => unidrntified flying objects: what we know | britannica [27] => unid4ntified flying objects: what we know | britannica [28] => unid3ntified flying objects: what we know | britannica [29] => unidebtified flying objects: what we know | britannica [30] => unidemtified flying objects: what we know | britannica [31] => unidejtified flying objects: what we know | britannica [32] => unidehtified flying objects: what we know | britannica [33] => unidehtified flying objects: what we know | britannica [34] => unidenrified flying objects: what we know | britannica [35] => unidenfified flying objects: what we know | britannica [36] => unidengified flying objects: what we know | britannica [37] => unidenyified flying objects: what we know | britannica [38] => uniden6ified flying objects: what we know | britannica [39] => uniden5ified flying objects: what we know | britannica [40] => unidentufied flying objects: what we know | britannica [41] => unidentjfied flying objects: what we know | britannica [42] => unidentkfied flying objects: what we know | britannica [43] => unidentofied flying objects: what we know | britannica [44] => unident9fied flying objects: what we know | britannica [45] => unident8fied flying objects: what we know | britannica [46] => unidentidied flying objects: what we know | britannica [47] => unidenticied flying objects: what we know | britannica [48] => unidentivied flying objects: what we know | britannica [49] => unidentigied flying objects: what we know | britannica [50] => unidentitied flying objects: what we know | britannica [51] => unidentiried flying objects: what we know | britannica [52] => unidentifued flying objects: what we know | britannica [53] => unidentifjed flying objects: what we know | britannica [54] => unidentifked flying objects: what we know | britannica [55] => unidentifoed flying objects: what we know | britannica [56] => unidentif9ed flying objects: what we know | britannica [57] => unidentif8ed flying objects: what we know | britannica [58] => unidentifiwd flying objects: what we know | britannica [59] => unidentifisd flying objects: what we know | britannica [60] => unidentifidd flying objects: what we know | britannica [61] => unidentifird flying objects: what we know | britannica [62] => unidentifi4d flying objects: what we know | britannica [63] => unidentifi3d flying objects: what we know | britannica [64] => unidentifies flying objects: what we know | britannica [65] => unidentifiex flying objects: what we know | britannica [66] => unidentifiec flying objects: what we know | britannica [67] => unidentifief flying objects: what we know | britannica [68] => unidentifier flying objects: what we know | britannica [69] => unidentifiee flying objects: what we know | britannica [70] => unidentified dlying objects: what we know | britannica [71] => unidentified clying objects: what we know | britannica [72] => unidentified vlying objects: what we know | britannica [73] => unidentified glying objects: what we know | britannica [74] => unidentified tlying objects: what we know | britannica [75] => unidentified rlying objects: what we know | britannica [76] => unidentified fkying objects: what we know | britannica [77] => unidentified fpying objects: what we know | britannica [78] => unidentified foying objects: what we know | britannica [79] => unidentified flting objects: what we know | britannica [80] => unidentified flging objects: what we know | britannica [81] => unidentified flhing objects: what we know | britannica [82] => unidentified fluing objects: what we know | britannica [83] => unidentified fl7ing objects: what we know | britannica [84] => unidentified fl6ing objects: what we know | britannica [85] => unidentified flyung objects: what we know | britannica [86] => unidentified flyjng objects: what we know | britannica [87] => unidentified flykng objects: what we know | britannica [88] => unidentified flyong objects: what we know | britannica [89] => unidentified fly9ng objects: what we know | britannica [90] => unidentified fly8ng objects: what we know | britannica [91] => unidentified flyibg objects: what we know | britannica [92] => unidentified flyimg objects: what we know | britannica [93] => unidentified flyijg objects: what we know | britannica [94] => unidentified flyihg objects: what we know | britannica [95] => unidentified flyihg objects: what we know | britannica [96] => unidentified flyinf objects: what we know | britannica [97] => unidentified flyinv objects: what we know | britannica [98] => unidentified flyinb objects: what we know | britannica [99] => unidentified flyinh objects: what we know | britannica [100] => unidentified flyiny objects: what we know | britannica [101] => unidentified flyint objects: what we know | britannica [102] => unidentified flying ibjects: what we know | britannica [103] => unidentified flying kbjects: what we know | britannica [104] => unidentified flying lbjects: what we know | britannica [105] => unidentified flying pbjects: what we know | britannica [106] => unidentified flying 0bjects: what we know | britannica [107] => unidentified flying 9bjects: what we know | britannica [108] => unidentified flying ovjects: what we know | britannica [109] => unidentified flying onjects: what we know | britannica [110] => unidentified flying ohjects: what we know | britannica [111] => unidentified flying ogjects: what we know | britannica [112] => unidentified flying ogjects: what we know | britannica [113] => unidentified flying obhects: what we know | britannica [114] => unidentified flying obnects: what we know | britannica [115] => unidentified flying obmects: what we know | britannica [116] => unidentified flying obkects: what we know | britannica [117] => unidentified flying obiects: what we know | britannica [118] => unidentified flying obuects: what we know | britannica [119] => unidentified flying objwcts: what we know | britannica [120] => unidentified flying objscts: what we know | britannica [121] => unidentified flying objdcts: what we know | britannica [122] => unidentified flying objrcts: what we know | britannica [123] => unidentified flying obj4cts: what we know | britannica [124] => unidentified flying obj3cts: what we know | britannica [125] => unidentified flying objexts: what we know | britannica [126] => unidentified flying objevts: what we know | britannica [127] => unidentified flying objefts: what we know | britannica [128] => unidentified flying objedts: what we know | britannica [129] => unidentified flying objedts: what we know | britannica [130] => unidentified flying objecrs: what we know | britannica [131] => unidentified flying objecfs: what we know | britannica [132] => unidentified flying objecgs: what we know | britannica [133] => unidentified flying objecys: what we know | britannica [134] => unidentified flying objec6s: what we know | britannica [135] => unidentified flying objec5s: what we know | britannica [136] => unidentified flying objecta: what we know | britannica [137] => unidentified flying objectz: what we know | britannica [138] => unidentified flying objectx: what we know | britannica [139] => unidentified flying objectd: what we know | britannica [140] => unidentified flying objecte: what we know | britannica [141] => unidentified flying objectw: what we know | britannica [142] => unidentified flying objects: qhat we know | britannica [143] => unidentified flying objects: ahat we know | britannica [144] => unidentified flying objects: shat we know | britannica [145] => unidentified flying objects: ehat we know | britannica [146] => unidentified flying objects: 3hat we know | britannica [147] => unidentified flying objects: 2hat we know | britannica [148] => unidentified flying objects: wgat we know | britannica [149] => unidentified flying objects: wbat we know | britannica [150] => unidentified flying objects: wnat we know | britannica [151] => unidentified flying objects: wjat we know | britannica [152] => unidentified flying objects: wuat we know | britannica [153] => unidentified flying objects: wyat we know | britannica [154] => unidentified flying objects: whzt we know | britannica [155] => unidentified flying objects: whst we know | britannica [156] => unidentified flying objects: whwt we know | britannica [157] => unidentified flying objects: whqt we know | britannica [158] => unidentified flying objects: whar we know | britannica [159] => unidentified flying objects: whaf we know | britannica [160] => unidentified flying objects: whag we know | britannica [161] => unidentified flying objects: whay we know | britannica [162] => unidentified flying objects: wha6 we know | britannica [163] => unidentified flying objects: wha5 we know | britannica [164] => unidentified flying objects: what qe know | britannica [165] => unidentified flying objects: what ae know | britannica [166] => unidentified flying objects: what se know | britannica [167] => unidentified flying objects: what ee know | britannica [168] => unidentified flying objects: what 3e know | britannica [169] => unidentified flying objects: what 2e know | britannica [170] => unidentified flying objects: what ww know | britannica [171] => unidentified flying objects: what ws know | britannica [172] => unidentified flying objects: what wd know | britannica [173] => unidentified flying objects: what wr know | britannica [174] => unidentified flying objects: what w4 know | britannica [175] => unidentified flying objects: what w3 know | britannica [176] => unidentified flying objects: what we jnow | britannica [177] => unidentified flying objects: what we mnow | britannica [178] => unidentified flying objects: what we lnow | britannica [179] => unidentified flying objects: what we onow | britannica [180] => unidentified flying objects: what we inow | britannica [181] => unidentified flying objects: what we kbow | britannica [182] => unidentified flying objects: what we kmow | britannica [183] => unidentified flying objects: what we kjow | britannica [184] => unidentified flying objects: what we khow | britannica [185] => unidentified flying objects: what we khow | britannica [186] => unidentified flying objects: what we kniw | britannica [187] => unidentified flying objects: what we knkw | britannica [188] => unidentified flying objects: what we knlw | britannica [189] => unidentified flying objects: what we knpw | britannica [190] => unidentified flying objects: what we kn0w | britannica [191] => unidentified flying objects: what we kn9w | britannica [192] => unidentified flying objects: what we knoq | britannica [193] => unidentified flying objects: what we knoa | britannica [194] => unidentified flying objects: what we knos | britannica [195] => unidentified flying objects: what we knoe | britannica [196] => unidentified flying objects: what we kno3 | britannica [197] => unidentified flying objects: what we kno2 | britannica [198] => unidentified flying objects: what we know | vritannica [199] => unidentified flying objects: what we know | nritannica [200] => unidentified flying objects: what we know | hritannica [201] => unidentified flying objects: what we know | gritannica [202] => unidentified flying objects: what we know | gritannica [203] => unidentified flying objects: what we know | beitannica [204] => unidentified flying objects: what we know | bditannica [205] => unidentified flying objects: what we know | bfitannica [206] => unidentified flying objects: what we know | btitannica [207] => unidentified flying objects: what we know | b5itannica [208] => unidentified flying objects: what we know | b4itannica [209] => unidentified flying objects: what we know | brutannica [210] => unidentified flying objects: what we know | brjtannica [211] => unidentified flying objects: what we know | brktannica [212] => unidentified flying objects: what we know | brotannica [213] => unidentified flying objects: what we know | br9tannica [214] => unidentified flying objects: what we know | br8tannica [215] => unidentified flying objects: what we know | brirannica [216] => unidentified flying objects: what we know | brifannica [217] => unidentified flying objects: what we know | brigannica [218] => unidentified flying objects: what we know | briyannica [219] => unidentified flying objects: what we know | bri6annica [220] => unidentified flying objects: what we know | bri5annica [221] => unidentified flying objects: what we know | britznnica [222] => unidentified flying objects: what we know | britsnnica [223] => unidentified flying objects: what we know | britwnnica [224] => unidentified flying objects: what we know | britqnnica [225] => unidentified flying objects: what we know | britabnica [226] => unidentified flying objects: what we know | britamnica [227] => unidentified flying objects: what we know | britajnica [228] => unidentified flying objects: what we know | britahnica [229] => unidentified flying objects: what we know | britahnica [230] => unidentified flying objects: what we know | britanbica [231] => unidentified flying objects: what we know | britanmica [232] => unidentified flying objects: what we know | britanjica [233] => unidentified flying objects: what we know | britanhica [234] => unidentified flying objects: what we know | britanhica [235] => unidentified flying objects: what we know | britannuca [236] => unidentified flying objects: what we know | britannjca [237] => unidentified flying objects: what we know | britannkca [238] => unidentified flying objects: what we know | britannoca [239] => unidentified flying objects: what we know | britann9ca [240] => unidentified flying objects: what we know | britann8ca [241] => unidentified flying objects: what we know | britannixa [242] => unidentified flying objects: what we know | britanniva [243] => unidentified flying objects: what we know | britannifa [244] => unidentified flying objects: what we know | britannida [245] => unidentified flying objects: what we know | britannida [246] => unidentified flying objects: what we know | britannicz [247] => unidentified flying objects: what we know | britannics [248] => unidentified flying objects: what we know | britannicw [249] => unidentified flying objects: what we know | britannicq ) </h1> </body>