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神舟二十号航天员第二次出舱 历时六个半小时

神舟二十号航天员完成第二次出舱活动,全程历时六个半小时。

综合新华社和中新社报道,据中国载人航天工程办公室消息,星期四(6月26日)晚上9时29分,经过约六个半小时出舱活动,神舟二十号乘组航天员陈冬、陈中瑞、王杰密切协同,在空间站机械臂和地面科研人员的配合支持下,完成既定任务。出舱航天员陈冬、陈中瑞安全返回问天实验舱。

据介绍,航天员陈冬、陈中瑞在出舱活动期间完成了空间站空间碎片防护装置安装、舱外设备设施巡检及处置等任务;并在舱外平台成功安装脚限适配器和接口转接件,有助于提高航天员舱外作业效率,后续出舱活动时间有望因此缩短约40分钟。

乘组承担的各项空间科学实验目前正在稳步推进,后续还将重点在空间生命科学、微重力基础物理、空间材料科学、航天医学、航天新技术等领域开展空间科学研究与技术试验。

神舟二十号乘组目前在轨工作已满两个月。乘组于5月22日完成第一次出舱活动,时长约八小时。

这是进入中国空间站应用与发展阶段以来,航天员首次通过天和核心舱节点舱出舱,航天员出舱与货物出舱任务首次关联耦合实施,航天员陈冬时隔两年再度漫步太空,航天员陈中瑞首次执行出舱任务。

#中国航天



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神舟二十号航天员第二次出舱 历时六个半小时

神舟二十号航天员完成第二次出舱活动,全程历时六个半小时。

综合新华社和中新社报道,据中国载人航天工程办公室消息,星期四(6月26日)晚上9时29分,经过约六个半小时出舱活动,神舟二十号乘组航天员陈冬、陈中瑞、王杰密切协同,在空间站机械臂和地面科研人员的配合支持下,完成既定任务。出舱航天员陈冬、陈中瑞安全返回问天实验舱。

据介绍,航天员陈冬、陈中瑞在出舱活动期间完成了空间站空间碎片防护装置安装、舱外设备设施巡检及处置等任务;并在舱外平台成功安装脚限适配器和接口转接件,有助于提高航天员舱外作业效率,后续出舱活动时间有望因此缩短约40分钟。

乘组承担的各项空间科学实验目前正在稳步推进,后续还将重点在空间生命科学、微重力基础物理、空间材料科学、航天医学、航天新技术等领域开展空间科学研究与技术试验。

神舟二十号乘组目前在轨工作已满两个月。乘组于5月22日完成第一次出舱活动,时长约八小时。

这是进入中国空间站应用与发展阶段以来,航天员首次通过天和核心舱节点舱出舱,航天员出舱与货物出舱任务首次关联耦合实施,航天员陈冬时隔两年再度漫步太空,航天员陈中瑞首次执行出舱任务。

#中国航天

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Telegram hopes to raise $1bn with a convertible bond private placement

The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.

What is Telegram?

Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.

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