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银河系中心附近能观察到许多“丝状结构”，科学家称之为“银河骨骼”。其中一根骨骼最近被发现断裂了，天文学家认为可能是一颗与之相撞的脉冲星导致的。这根骨骼命名为 G359.13142-0.20005，长 230 光年。根据哈佛大学天文学家在《Monthly Notice of the Royal Astronomical Society》期刊上发表的研究，该骨骼断裂区域发现了一颗脉冲星。通过综合 NASA Chandra X-射线天文台、南非 MeerKAT 望远镜阵列以及美国新墨西哥州 Very Large Array 的观测数据，天文学家估计该脉冲星以 160.9-321.8 万公里的时速撞击了骨骼。
WIRED:The Milky Way Has a Mysterious ‘Broken Bone’
银河系中心附近能观察到许多“丝状结构”，科学家称之为“银河骨骼”。其中一根骨骼最近被发现断裂了，天文学家认为可能是一颗与之相撞的脉冲星导致的。这根骨骼命名为 G359.13142-0.20005，长 230 光年。根据哈佛大学天文学家在《Monthly Notice of the Royal Astronomical Society》期刊上发表的研究，该骨骼断裂区域发现了一颗脉冲星。通过综合 NASA Chandra X-射线天文台、南非 MeerKAT 望远镜阵列以及美国新墨西哥州 Very Large Array 的观测数据，天文学家估计该脉冲星以 160.9-321.8 万公里的时速撞击了骨骼。
WIRED:The Milky Way Has a Mysterious ‘Broken Bone’
#科学
BY Solidot
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Channels are not fully encrypted, end-to-end. All communications on a Telegram channel can be seen by anyone on the channel and are also visible to Telegram. Telegram may be asked by a government to hand over the communications from a channel. Telegram has a history of standing up to Russian government requests for data, but how comfortable you are relying on that history to predict future behavior is up to you. Because Telegram has this data, it may also be stolen by hackers or leaked by an internal employee. Ukrainian forces successfully attacked Russian vehicles in the capital city of Kyiv thanks to a public tip made through the encrypted messaging app Telegram, Ukraine's top law-enforcement agency said on Tuesday. In view of this, the regulator has cautioned investors not to rely on such investment tips / advice received through social media platforms. It has also said investors should exercise utmost caution while taking investment decisions while dealing in the securities market. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised. One thing that Telegram now offers to all users is the ability to “disappear” messages or set remote deletion deadlines. That enables users to have much more control over how long people can access what you’re sending them. Given that Russian law enforcement officials are reportedly (via Insider) stopping people in the street and demanding to read their text messages, this could be vital to protect individuals from reprisals.
from hk
