国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Global EditionASIA 中文雙語(yǔ)Fran?ais
China
Home / China / Innovation

Shenzhou XX spaceship to make uncrewed return to Earth: spokesperson

Xinhua | Updated: 2025-12-02 09:48
Share
Share - WeChat

BEIJING -- After a potential space debris impact, the Shenzhou XX spaceship, currently docked with China's space station, will make an uncrewed return to Earth, according to Ji Qiming, a project spokesperson with the country's manned space program.

Following a suspected debris strike on Shenzhou XX's viewport, the three astronauts originally scheduled to return to Earth aboard the spacecraft were redirected to Shenzhou XXI, which brought them home safely on Nov 14.

China launched the Shenzhou XXII on Nov 25 to provide a new return vehicle for the orbiting crew -- completing the first emergency launch in the history of its manned space program.

During a subsequent spacewalk, the Shenzhou XXI crew, who are now undertaking a six-month orbital stay, may be tasked with inspecting the cracked viewport. They may also perform protective work on it using specialized devices delivered by the Shenzhou XXII launch -- a procedure still being validated in ground tests, said Ji in a recent CCTV interview.

A day prior to their planned return on Nov 5, the Shenzhou XX crew spotted an anomaly on the viewport's edge -- a triangular, paint-like mark. They photographed it from multiple angles and under different lights, while the station's robotic arm cameras were employed to take supplemental external pictures.

The flaw was later identified as "penetrating cracks," said Jia Shijin, chief designer of the crewed spaceship system from China Academy of Space Technology. "The space debris responsible is preliminarily judged to be less than a millimeter in size, but struck with extremely high speed."

After this initial investigation, ground teams conducted extensive simulations and tests -- and commissioned two research institutions to perform wind tunnel tests for independent verification, Jia revealed.

In a worst-case scenario, the cracks could spread, causing the outer pane to detach -- with this leading to the failure of the inner pressure-sealing glass, resulting in cabin depressurization and the ingress of high-speed gases, Jia explained.

Guided by the principle of astronaut safety first, China opted for the historic alternative return and emergency launch procedures.

Ji said that Shenzhou XX's unmanned return mission will generate meaningful real-world experimental data for subsequent missions.

Four mice traveled to space aboard Shenzhou XXI spaceship. They were initially scheduled for a 5-to-7-day experiment on orbit, but instead stayed for about two weeks before returning with the Shenzhou XX crew, according to Wu Dawei from the China Astronaut Research and Training Center. All mice returned in healthy condition, Wu said.

Top
BACK TO THE TOP
English
Copyright 1994 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
河北省| 高邮市| 陆川县| 大荔县| 临沧市| 新乡县| 海伦市| 综艺| 楚雄市| 桓台县| 松江区| 东乡族自治县| 肃宁县| 吉木萨尔县| 黔江区| 海城市| 乌鲁木齐市| 万全县| 崇阳县| 页游| 普宁市| 河津市| 江陵县| 方山县| 临澧县| 南涧| 恩施市| 视频| 兰溪市| 大新县| 化隆| 洛宁县| 永仁县| 罗源县| 苍梧县| 吉木乃县| 沾化县| 大竹县| 永宁县| 塔河县| 惠来县|