인도군 수호이-30, 탑재 레이더로 중국 스텔스기 젠-20 탐지
http://news.joins.com/article/22640673
국제드론 챔피언십 올 가을 한국서 열린다
http://biz.heraldcorp.com/view.php?ud=20180520000176
"산불, 밤에도 끈다"…영암산림항공관리소 '수리온' 투입
http://www.yonhapnews.co.kr/bulletin/2018/05/21/0200000000AKR20180521098300054.HTML
[단독]‘끝나지 않은’ 헬기보험 담합...공정위, 보험중개업체들 전격조사
http://www.foodtvnews.com/news/article.html?no=7510
국방부, 연례적 한미훈련 지속 실시 방침…"입장 변화 없다"
http://www.yonhapnews.co.kr/bulletin/2018/05/21/0200000000AKR20180521070800014.HTML
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우리 은하 중심부에 블랙홀 1만 개
http://dongascience.donga.com/news/view/22224
‘별들의 요람’ 오리온…고해상도 지도 완성
http://nownews.seoul.co.kr/news/newsView.php?id=20180521601003
중국, 달 탐사선 ‘창어 4호’ 중계 위성 발사 성공...세계 최초 달 뒷면 착륙 한발 다가가
http://chinafocus.co.kr/view.php?no=18649
[우주를 보다] 주위를 ‘냠냠’…화성서 포착된 ‘팩맨 크레이터’
http://nownews.seoul.co.kr/news/newsView.php?id=20180521601005
[런던에서 온 편지] 50. EU-UK 우주서 격돌..영, 독자 GPS 만드나
http://www.edaily.co.kr/news/news_detail.asp?newsId=01420246619211216
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한국공항공사, 김포공항서 화재발생 가정 대응훈련 실시
http://news.mt.co.kr/mtview.php?no=2018052116093186234
인천공항공사, 무재해 결의대회 개최
http://www.fnnews.com/news/201805211402216047
"대한·아시아나, '황금시간' 양도해 저가항공 지원 의혹"
http://www.yonhapnews.co.kr/bulletin/2018/05/21/0200000000AKR20180521054100001.HTML
[단독] 관세청, 대한항공 협력업체 압수수색…“한진家 밀수 의심 물품 발견”
http://news.kbs.co.kr/news/view.do?ncd=3652668
방콕행 이스타항공 여객기 3시간 반 만에 회항…승객 불편
https://news.sbs.co.kr/news/endPage.do?news_id=N1004766584
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Astronomers Discover Monster Black Hole the Size of 20 Billion Suns
https://sputniknews.com/science/201805211064632940-Astronomers-Discover-Monster-Black-Hole/
'Not So Invisible After All': Su-30 Manages to Detect Top Chinese Stealth Jet
https://sputniknews.com/military/201805191064607135-chinese-stealth-jet-detected/
Orbital ATK will launch an Antares rocket to the International Space Station tomorrow morning
https://www.theverge.com/2018/5/20/17374228/nasa-orbital-atk-antares-rocket-cygnus-cargo-resupply-mission-oa9
This Is What A Boeing F-32 Would've Looked Like If Lockheed Lost The JSF Competition
http://www.thedrive.com/the-war-zone/20971/this-is-what-a-boeing-f-32-wouldve-looked-like-if-lockheed-lost-the-jsf-competition
NASA Finds Boeing Showed ‘No Initiative’ To Fix F/A-18 Hypoxia (May 21, 2018)
http://aviationweek.com/defense/nasa-finds-boeing-showed-no-initiative-fix-fa-18-hypoxia
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Queqiao relay satellite launched ahead of Chang’e-4 lunar mission
https://www.nasaspaceflight.com/2018/05/queqiao-relay-satellite-launched-change-4-lunar-mission/
Earth's Magnetic Field Is Drifting Westward, and Nobody Knows Why
https://www.space.com/40621-earth-magnetic-field-drifts.html
NASA Is Launching a Box of Lasers to Make the Coldest Spot In the Universe
https://www.space.com/40631-nasa-coldest-spot-universe-laser-box.html
2018-05-21 Full List : http://afbase.com/ac4news/779850