www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
World / US and Canada

SpaceX makes third rocket landing on droneship

(Xinhua) Updated: 2016-05-28 20:12

WASHINGTON -- U.S. space firm SpaceX on Friday successfully landed the first stage of its Falcon 9 rocket on a droneship in the Atlantic Ocean after launching a commercial communications satellite into orbit for a Thailand company.

"Falcon 9 first stage has landed," the California-based company said on Twitter, minutes after the satellite launch at 5:39 p.m. EDT (2139 GMT) from Cape Canaveral Air Force Station in Florida.

The success means that SpaceX has now landed three Falcon 9 first stages in a row on a boat in just two months.

The main objective of the mission was to deliver a commercial communications satellite called THAICOM 8 to a supersynchronous transfer orbit, which was used to move a satellite into a geostationary orbit about 36,000 km over the equator.

The 3,000-kg satellite, owned by Thailand's Thaicom, will provide communications coverage for South Asia and Southeast Asia and has an operational design life of 15 years.

Given this mission's high-orbit destination, SpaceX said before launch that a successful landing is "challenging" because the first stage of the rocket would be subject to extreme velocities and re-entry heating.

Prior to the three successful droneship touchdowns, SpaceX's four such attempts all ended in failure.

All of these landing attempts are part of SpaceX's effort to produce a fully and rapidly reusable rocket, which it said will dramatically reduce the cost of space transport.

Traditionally, rockets are designed for a single use only, burning up or crashing into the ocean after liftoff.

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 人碰人碰人成人免费视频 | 国产真实乱子伦精品视 | 91av综合 | 岛国在线永久免费视频 | 国产精品久久久久免费a∨ 国产精品久久久久免费视频 | 日韩欧美综合在线二区三区 | 美女把张开腿男生猛戳免费视频 | 91香蕉成人免费高清网站 | 成人免费视频网站 | 日本一级全黄大片 | 美国毛片亚洲社区在线观看 | 亚洲一区二区三区福利在线 | 国语精品视频在线观看不卡 | 加勒比色综合久久久久久久久 | 欧美偷拍小视频 | 好男人天堂网 | 欧美13一14周岁a在线播放 | 国产精品99久久久久久小说 | 精品无人区一区二区三区a 精品午夜国产在线观看不卡 | 久久成年人视频 | 精品欧美一区二区精品久久 | 色熟| 国产精品香蕉一区二区三区 | 国产一区不卡 | 国内精品小视频在线 | 色一欲一性一乱一区二区三区 | 免费观看性欧美大片无片 | 亚洲高清国产品国语在线观看 | 九九免费精品视频 | 99久久99热精品免费观看国产 | 国产美女视频做爰 | 国产午夜精品一区二区 | 成人一级片在线观看 | 国产免费高清在线精品一区 | 久爱免费观看在线网站 | 国产高清美女一级a毛片久久w | 男人天堂中文字幕 | 国产成人高清精品免费观看 | 大伊香蕉精品视频在线天堂 | 日本无玛 | 亚洲人成在线播放网站 |