https://usaaao.org/2026/02/18/2026-first-round-exam-results/https://usaaao.org/wp-content/uploads/2026/02/image.pngimage2026-02-18T05:53:24+00:00monthlyhttps://usaaao.org/resources/past-exams/2026-02-18T05:46:27+00:00weekly0.6https://usaaao.org/faqs/2026-01-05T17:17:08+00:00weekly0.6https://usaaao.org/2025/12/27/registration-opens-soon/2026-01-02T17:14:32+00:00monthlyhttps://usaaao.org/donate/2025-12-19T15:52:20+00:00weekly0.6https://usaaao.org/about/selection-process/2025-12-18T00:03:34+00:00weekly0.6https://usaaao.org/registration/https://usaaao.org/wp-content/uploads/2021/12/tim_runda_razmisljanje.jpgtim_runda_razmisljanje2025-12-18T00:01:09+00:00weekly0.6https://usaaao.org/2025/08/22/historic-result-for-the-us-team-at-ioaa-2025/https://usaaao.org/wp-content/uploads/2025/08/49e00bbe-f450-4ad2-8f5e-620b7f16d0dd.jpg49e00bbe-f450-4ad2-8f5e-620b7f16d0ddhttps://usaaao.org/wp-content/uploads/2025/08/image.pngimage2025-10-03T13:12:33+00:00monthlyhttps://usaaao.org/funding/2025-08-15T16:53:39+00:00weekly0.6https://usaaao.org/results-of-nac/2025-08-15T16:48:10+00:00weekly0.6https://usaaao.org/2025/08/14/us-team-at-ioaa-2025/https://usaaao.org/wp-content/uploads/2025/08/whatsapp-image-2025-08-12-at-12.01.59-pm.jpegWhatsApp Image 2025-08-12 at 12.01.59 PM2025-08-14T05:47:29+00:00monthlyhttps://usaaao.org/2025/07/10/usaaao-test-solve-on-july-15/2025-07-16T00:25:23+00:00monthlyhttps://usaaao.org/about/the-team/https://usaaao.org/wp-content/uploads/2025/06/whatsapp-image-2025-06-19-at-11.31.51-pm.jpegWhatsApp Image 2025-06-19 at 11.31.51 PMhttps://usaaao.org/wp-content/uploads/2025/06/rohan-raghu-photo-rohan-r-1.pngRohan-Raghu-Photo - Rohan R (1)https://usaaao.org/wp-content/uploads/2025/06/img_7484-large-brian-sun.jpegIMG_7484 Large - Brian Sunhttps://usaaao.org/wp-content/uploads/2025/06/benalan-aldric-benalan.pngbenalan - Aldric Benalanhttps://usaaao.org/wp-content/uploads/2025/06/feodor2025usphysicsteam-feodor-yevtushenko.pngfeodor2025usphysicsteam - Feodor Yevtushenkohttps://usaaao.org/wp-content/uploads/2025/06/me-picture-yuxian-liu.jpegme picture - Yuxian Liuhttps://usaaao.org/wp-content/uploads/2025/06/image-1.pngimagehttps://usaaao.org/wp-content/uploads/2025/06/image.pngimagehttps://usaaao.org/wp-content/uploads/2024/05/aditya_photo-aditya-peddi.jpgAditya_Photo - Aditya Peddihttps://usaaao.org/wp-content/uploads/2024/05/fanfanportrait_boston2024-fanfan-jiang.jpgFanFanPortrait_Boston2024 - FanFan Jiang2025-06-20T03:34:22+00:00weekly0.6https://usaaao.org/2025/06/05/meet-the-team-3/2025-06-19T13:02:21+00:00monthlyhttps://usaaao.org/2025/05/11/results-of-the-2025-nac/https://usaaao.org/wp-content/uploads/2025/05/image.pngimage2025-05-12T03:38:56+00:00monthlyhttps://usaaao.org/2025/02/18/2025-first-round-exam-results/https://usaaao.org/wp-content/uploads/2025/02/image-1.pngimagehttps://usaaao.org/wp-content/uploads/2025/02/image.pngimage2025-02-18T13:18:44+00:00monthlyhttps://usaaao.org/2025/01/30/last-two-days-to-register-for-first-round-exam/2025-01-30T19:16:39+00:00monthlyhttps://usaaao.org/2025/01/01/first-round-registration-opens/2025-01-01T19:16:59+00:00monthlyhttps://usaaao.org/resources/summer-training-camp/2024-10-26T13:09:07+00:00weekly0.6https://usaaao.org/about/history/https://usaaao.org/wp-content/uploads/2024/10/image-1.pngimagehttps://usaaao.org/wp-content/uploads/2024/10/image.pngimagehttps://usaaao.org/wp-content/uploads/2019/08/23825990_382450922193797_5586608047834999434_o.jpg23825990_382450922193797_5586608047834999434_o2024-10-26T12:58:26+00:00weekly0.6https://usaaao.org/2024/10/13/announcing-dates-for-usaaao-2025/2024-10-13T17:15:05+00:00monthlyhttps://usaaao.org/2024/08/26/historic-result-for-the-us-team-at-ioaa-2024/https://usaaao.org/wp-content/uploads/2024/08/whatsapp-image-2024-08-26-at-6.48.53-pm-1-1.jpegWhatsApp Image 2024-08-26 at 6.48.53 PM (1)https://usaaao.org/wp-content/uploads/2024/08/whatsapp-image-2024-08-26-at-6.48.53-pm-1.jpegWhatsApp Image 2024-08-26 at 6.48.53 PM (1)2024-09-09T20:59:53+00:00monthlyhttps://usaaao.org/2024/05/21/results-of-the-2024-nac/2024-08-30T22:15:47+00:00monthlyhttps://usaaao.org/2024/08/17/us-team-in-brazil-for-ioaa-2024/2024-08-17T19:09:53+00:00monthlyhttps://usaaao.org/about/volunteers/2024-08-16T03:05:52+00:00weekly0.6https://usaaao.org/2024/07/27/introductory-astronomy-and-astrophysics-summer-camp-session-3/2024-08-02T21:17:40+00:00monthlyhttps://usaaao.org/2024/06/11/introductory-astronomy-and-astrophysics-summer-camp-session-1/2024-07-27T01:18:18+00:00monthlyhttps://usaaao.org/2024/07/15/introductory-astronomy-and-astrophysics-summer-camp-session-2/2024-07-27T01:17:43+00:00monthlyhttps://usaaao.org/2024/05/29/meet-the-team-2/2024-05-29T13:54:05+00:00monthlyhttps://usaaao.org/2024/02/17/2024-first-round-exam-results/https://usaaao.org/wp-content/uploads/2024/02/image-1.pngimage-1https://usaaao.org/wp-content/uploads/2024/02/image.pngimage2024-02-19T19:31:23+00:00monthlyhttps://usaaao.org/2024/01/30/last-two-days-to-register-for-2024-first-round-exam/2024-01-30T17:21:48+00:00monthlyhttps://usaaao.org/2024/01/02/registration-for-the-2024-first-round-exam-is-now-live/2024-01-02T21:46:18+00:00monthlyhttps://usaaao.org/2023/12/09/announcing-the-dates-for-usaaao-2024/2023-12-10T19:09:06+00:00monthlyhttps://usaaao.org/2023/08/19/16th-ioaa-has-ended/https://usaaao.org/wp-content/uploads/2023/08/51333f48-8d3b-4e38-8dc9-a34697f58aab.jpg51333f48-8d3b-4e38-8dc9-a34697f58aab2023-08-19T17:43:06+00:00monthlyhttps://usaaao.org/2023/08/12/us-team-at-ioaa-2023/https://usaaao.org/wp-content/uploads/2023/08/img_7094.jpgimg_70942023-08-12T17:42:25+00:00monthlyhttps://usaaao.org/2023/07/12/webinar-on-fundamental-physics-for-usaaao/2023-07-12T21:36:20+00:00monthlyhttps://usaaao.org/2023/05/07/results-of-the-2023-nac/2023-05-07T19:04:11+00:00monthlyhttps://usaaao.org/2023/04/02/2023-nac-complete/2023-04-03T01:22:23+00:00monthlyhttps://usaaao.org/2023/02/13/2023-usaaao-first-round-exam-complete/https://usaaao.org/wp-content/uploads/2023/02/image-1.pngimage-1https://usaaao.org/wp-content/uploads/2023/02/image.pngimage2023-02-20T02:00:31+00:00monthlyhttps://usaaao.org/2023/01/27/last-weekend-to-register/https://usaaao.org/wp-content/uploads/2023/01/in_the_cave.jpgin_the_cavehttps://usaaao.org/wp-content/uploads/2023/01/img_3161.jpgIMG_31612023-01-31T01:59:54+00:00monthlyhttps://usaaao.org/2023/01/02/usaaao-registration-opens-tomorrow/2023-01-03T16:14:18+00:00monthlyhttps://usaaao.org/2022/11/16/schedule-for-usaaao-2023/2022-12-15T01:04:44+00:00monthlyhttps://usaaao.org/2022/08/23/15th-ioaa-has-ended/https://usaaao.org/wp-content/uploads/2022/08/img-4469.jpgimg-4469https://usaaao.org/wp-content/uploads/2022/08/img-5626.jpgIMG-56262022-08-23T04:18:06+00:00monthlyhttps://usaaao.org/resources/2022-08-02T14:46:35+00:00weekly0.6https://usaaao.org/2022/04/20/2022-usa-astronomy-and-astrophysics-team/2022-05-17T22:19:03+00:00monthlyhttps://usaaao.org/2022/05/09/applications-for-the-usaaao-astronomy-astrophysics-camp-2022-are-now-open/2022-05-11T20:25:39+00:00monthlyhttps://usaaao.org/2022/03/28/national-astronomy-competition-is-complete/2022-03-28T22:05:49+00:00monthlyhttps://usaaao.org/2022/02/14/first-round-complete-4/https://usaaao.org/wp-content/uploads/2022/02/tim_runda_diskusija.jpgtim_runda_diskusija2022-02-14T13:11:42+00:00monthlyhttps://usaaao.org/2022/02/06/first-round-done/https://usaaao.org/wp-content/uploads/2022/02/ceo_time_teorijska.jpgceo_time_teorijska2022-02-07T00:36:23+00:00monthlyhttps://usaaao.org/2022/01/31/last-day-to-register-2/2022-01-31T13:12:52+00:00monthlyhttps://usaaao.org/2022/01/04/usaaao-registration-is-open/2022-01-05T02:43:11+00:00monthlyhttps://usaaao.org/2021/12/08/schedule-for-usaaao-2022/https://usaaao.org/wp-content/uploads/2021/12/ceo_tim_sareno.jpgceo_tim_sareno2021-12-08T21:47:45+00:00monthlyhttps://usaaao.org/2021/11/21/14th-ioaa-has-ended/2021-12-03T16:40:24+00:00monthlyhttps://usaaao.org/2021/05/10/2021-usa-astronomy-and-astrophysics-team/2021-06-08T15:06:43+00:00monthlyhttps://usaaao.org/2021/06/07/training-starts-this-week/https://usaaao.org/wp-content/uploads/2021/06/za-sajt-pregledanje.jpgza sajt pregledanje2021-06-08T02:16:35+00:00monthlyhttps://usaaao.org/2021/03/23/update-national-astronomy-competition/2021-04-23T02:06:25+00:00monthlyhttps://usaaao.org/2021/03/14/national-astronomy-competition-is-less-than-a-week-away-2/2021-03-19T18:30:45+00:00monthlyhttps://usaaao.org/2021/02/02/first-round-complete-3/2021-02-03T01:46:05+00:00monthlyhttps://usaaao.org/2021/01/27/last-day-to-register/2021-01-27T21:11:29+00:00monthlyhttps://usaaao.org/2021/01/20/registration-closes-in-a-week/2021-01-20T22:40:42+00:00monthlyhttps://usaaao.org/category-space-blog/2020-12-09T21:19:37+00:00weekly0.6https://usaaao.org/2020/11/17/schedule-for-usaaao-2021/2020-12-06T22:48:46+00:00monthlyhttps://usaaao.org/2020/10/25/successful-year-for-usa-at-the-gecaa/https://usaaao.org/wp-content/uploads/2020/10/screen-shot-2020-10-25-at-23.40.09-1.pngScreen Shot 2020-10-25 at 23.40.09https://usaaao.org/wp-content/uploads/2020/10/screen-shot-2020-10-25-at-23.40.09.pngScreen Shot 2020-10-25 at 23.40.092020-10-26T03:45:53+00:00monthlyhttps://usaaao.org/2020/08/13/introducing-the-usaaao-publicity-team/2020-08-14T15:18:19+00:00monthlyhttps://usaaao.org/2020/07/29/global-e-competition-on-astronomy-and-astrophysics/2020-08-06T03:32:36+00:00monthlyhttps://usaaao.org/2020/06/21/call-for-publicity-officers/2020-06-26T19:55:32+00:00monthlyhttps://usaaao.org/2020/06/19/general-announcement/2020-06-20T02:17:39+00:00monthlyhttps://usaaao.org/2020/04/27/announcing-the-2020-usa-astronomy-and-astrophysics-team/https://usaaao.org/wp-content/uploads/2020/04/xw_02949.jpgXW_029492020-05-28T03:40:36+00:00monthlyhttps://usaaao.org/2020/03/04/nac-update-and-the-guest-team-update/2020-05-28T02:46:20+00:00monthlyhttps://usaaao.org/2020/04/19/grading-of-nac-is-complete/2020-04-20T03:15:59+00:00monthlyhttps://usaaao.org/2020/04/04/national-astronomy-competition-is-in-progress/2020-04-05T22:18:58+00:00monthlyhttps://usaaao.org/2020/03/29/national-astronomy-competition-is-less-than-a-week-away/2020-03-30T02:11:17+00:00monthlyhttps://usaaao.org/2020/03/15/nac-is-moving-online/2020-03-22T22:45:25+00:00monthlyhttps://usaaao.org/2020/02/24/first-round-complete-2/2020-02-27T01:43:50+00:00monthlyhttps://usaaao.org/2020/02/15/first-round-updates/2020-02-15T14:18:26+00:00monthlyhttps://usaaao.org/2020/02/09/registration-closes-tonight/2020-02-10T00:14:49+00:00monthlyhttps://usaaao.org/2020/02/03/first-round-is-a-week-away/https://usaaao.org/wp-content/uploads/2020/02/highlight11.jpghighlight112020-02-03T14:51:25+00:00monthlyhttps://usaaao.org/2019/07/30/support-usa-astronomy-and-astrophysics-team-in-the-13th-ioaa-aug-2-10/2020-01-24T20:09:52+00:00monthlyhttps://usaaao.org/2018/11/13/historical-results-for-team-usa-in-the-international-olympiad-in-astronomy-and-astrophysics/https://usaaao.org/wp-content/uploads/2018/11/img_20181111_113134.jpgIMG_20181111_113134https://usaaao.org/wp-content/uploads/2018/11/img_8365.jpgIMG_8365https://usaaao.org/wp-content/uploads/2018/11/img_5778.jpgIMG_57782020-01-24T20:07:44+00:00monthlyhttps://usaaao.org/2018/10/31/support-team-usa-in-the-12th-ioaa-nov-3-11/2020-01-24T20:06:00+00:00monthlyhttps://usaaao.org/2019/08/10/making-history-at-the-international-olympiad-in-astronomy-and-astrophysics/https://usaaao.org/wp-content/uploads/2019/08/group_photo1.jpggroup_photo12020-01-24T20:00:52+00:00monthlyhttps://usaaao.org/2020/01/02/registration-is-open-2/2020-01-05T22:33:43+00:00monthlyhttps://usaaao.org/2019/10/30/schedule-for-usaaao-2020/https://usaaao.org/wp-content/uploads/2019/10/highlight5.jpghighlight5https://usaaao.org/wp-content/uploads/2019/10/highlight2-e1589769811868.jpghighlight2https://usaaao.org/wp-content/uploads/2019/10/highlight8.jpghighlight8https://usaaao.org/wp-content/uploads/2019/10/highlight1.jpghighlight1https://usaaao.org/wp-content/uploads/2019/10/highlight7.jpghighlight72019-10-30T14:31:58+00:00monthlyhttps://usaaao.org/2017/12/06/us-team-places-2nd-overall-in-thailand/https://usaaao.org/wp-content/uploads/2017/12/usioaa2017.jpgusioaa20172019-09-20T08:03:55+00:00monthlyhttps://usaaao.org/2018/01/15/register-for-the-2018-usaaao/2019-09-20T08:02:47+00:00monthlyhttps://usaaao.org/photo-blog/https://usaaao.org/wp-content/uploads/2019/08/img_20190809_230838.jpgIMG_20190809_230838https://usaaao.org/wp-content/uploads/2019/08/img_20190809_223141.jpgIMG_20190809_223141https://usaaao.org/wp-content/uploads/2019/08/img_20190807_222956.jpgIMG_20190807_222956https://usaaao.org/wp-content/uploads/2019/08/68340972_1382966802047010_5747728786892259328_n.jpg68340972_1382966802047010_5747728786892259328_nhttps://usaaao.org/wp-content/uploads/2019/08/68921416_357022888569147_5715870574916403200_n.jpg68921416_357022888569147_5715870574916403200_nhttps://usaaao.org/wp-content/uploads/2019/08/68503978_345909032956548_2983451993684574208_n.jpg68503978_345909032956548_2983451993684574208_nhttps://usaaao.org/wp-content/uploads/2019/08/67807851_791447644590792_3508850025834741760_n.jpg67807851_791447644590792_3508850025834741760_nhttps://usaaao.org/wp-content/uploads/2019/08/68332582_2414078855582436_214950503140818944_n.jpg68332582_2414078855582436_214950503140818944_nhttps://usaaao.org/wp-content/uploads/2019/08/67799283_2182368545208195_6205489669770051584_n.jpg67799283_2182368545208195_6205489669770051584_nhttps://usaaao.org/wp-content/uploads/2019/08/67735084_456987828221966_853727382618505216_n.jpg67735084_456987828221966_853727382618505216_n2019-08-13T18:45:36+00:00weekly0.6https://usaaao.org/about/2019-08-13T17:41:11+00:00weekly0.6https://usaaao.org/donors/https://usaaao.org/wp-content/uploads/2019/06/dsc01671.jpgDSC016712019-06-24T04:11:10+00:00weekly0.6https://usaaao.org/2019/01/11/be-part-of-the-team-usa-at-the-international-astronomy-and-astrophysics-olympiad/https://usaaao.org/wp-content/uploads/2019/01/img_20181111_111051.jpgimg_20181111_111051https://usaaao.org/wp-content/uploads/2019/01/img_20181105_101151.jpgimg_20181105_101151https://usaaao.org/wp-content/uploads/2019/01/img_5777.jpgimg_57772019-06-20T21:32:17+00:00monthlyhttps://usaaao.org/2019/05/21/announcing-the-2019-usa-team/2019-06-20T21:31:28+00:00monthlyhttps://usaaao.org/2019/02/08/first-round-complete/2019-02-08T12:56:12+00:00monthlyhttps://usaaao.org/2018/12/01/registration-is-open/2018-12-02T21:24:31+00:00monthlyhttps://usaaao.org/2018/11/24/schedule-for-usaaao-2019/https://usaaao.org/wp-content/uploads/2018/11/dsc02298.jpgDSC022982018-12-01T19:01:27+00:00monthlyhttps://usaaao.org/2018/07/25/congratulations-to-the-2018-us-ioaa-team/2018-08-24T19:14:15+00:00monthlyhttps://usaaao.org/2017/08/17/training-camp-success/https://usaaao.org/wp-content/uploads/2017/08/camp.pngcamp2017-08-17T21:42:18+00:00monthlyhttps://usaaao.org/2017/07/09/meet-the-team/2017-07-10T17:46:15+00:00monthlyhttps://usaaao.org/2017/06/10/usaaao-2017-conclusion/2017-06-10T20:13:02+00:00monthlyhttps://usaaao.org/2017/05/06/first-round-results/https://usaaao.org/wp-content/uploads/2017/05/screenshot-from-2017-05-06-190043.pngScreenshot from 2017-05-06 19:00:432017-06-10T15:23:01+00:00monthlyhttps://usaaao.org/2017/05/26/national-astronomy-olympiad/2017-06-10T15:21:26+00:00monthlyhttps://usaaao.org/2017/05/01/first-round-closed/2017-05-01T07:10:13+00:00monthlyhttps://usaaao.org/2017/04/03/first-round-2017-registration-open/2017-04-03T18:10:03+00:00monthlyhttps://usaaao.org/2016/06/17/crowdfunding-campaign-2016/2016-06-17T13:06:35+00:00monthlyhttps://usaaao.org/2016/06/17/team-usa-2016/2016-06-17T05:58:25+00:00monthlyhttps://usaaao.orgdaily1.02026-02-18T05:53:24+00:00