Notice: file_put_contents(): Write of 7882 bytes failed with errno=28 No space left on device in /var/www/tg-me/post.php on line 50 Solidot 纯净版 | Telegram Webview: SolidotR/1952 -
天文学家首度确认海王星上存在极光现象，由 NASA 韦伯太空望远镜所发现，补上了太阳系四颗巨行星极光观测的最后一块拼图。这也是我们首次直接捕捉到这颗最远行星的极光辉光与光谱特征。海王星位于太阳系边缘，距离太阳约45亿公里，是一颗冰冷巨行星。自 1989 年航海家二号飞掠海王星后，这颗遥远行星便再无太空船造访。如今韦伯太空望远镜首度捕捉到海王星上明亮的极光活动。这项突破得益于韦伯望远镜优异的近红外灵敏度，不仅能拍下极光发出的辉光，还能透过光谱清楚辨识代表极光活动的重要指标：三氢阳离子（H₃⁺）。这种离子也曾在木星、土星与天王星的极光中被侦测到，被视为气体行星极光的重要证据。与地球或木星不同，海王星的极光并不集中于南北极，而是分布在行星的中纬度地区。这是因为海王星具有异常倾斜的磁场结构，其磁轴与自转轴倾斜达 47 度，这一特征最早由航海家二号所发现。 天文館:首度捕捉到海王星極光 NASA's Webb Captures Neptune's Auroras For First Time
天文学家首度确认海王星上存在极光现象，由 NASA 韦伯太空望远镜所发现，补上了太阳系四颗巨行星极光观测的最后一块拼图。这也是我们首次直接捕捉到这颗最远行星的极光辉光与光谱特征。海王星位于太阳系边缘，距离太阳约45亿公里，是一颗冰冷巨行星。自 1989 年航海家二号飞掠海王星后，这颗遥远行星便再无太空船造访。如今韦伯太空望远镜首度捕捉到海王星上明亮的极光活动。这项突破得益于韦伯望远镜优异的近红外灵敏度，不仅能拍下极光发出的辉光，还能透过光谱清楚辨识代表极光活动的重要指标：三氢阳离子（H₃⁺）。这种离子也曾在木星、土星与天王星的极光中被侦测到，被视为气体行星极光的重要证据。与地球或木星不同，海王星的极光并不集中于南北极，而是分布在行星的中纬度地区。这是因为海王星具有异常倾斜的磁场结构，其磁轴与自转轴倾斜达 47 度，这一特征最早由航海家二号所发现。 天文館:首度捕捉到海王星極光 NASA's Webb Captures Neptune's Auroras For First Time
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Pinterest (PINS) closed at $71.75 in the latest trading session, marking a -0.18% move from the prior day. This change lagged the S&P 500's daily gain of 0.1%. Meanwhile, the Dow gained 0.9%, and the Nasdaq, a tech-heavy index, lost 0.59%.
Heading into today, shares of the digital pinboard and shopping tool company had lost 17.41% over the past month, lagging the Computer and Technology sector's loss of 5.38% and the S&P 500's gain of 0.71% in that time.
Investors will be hoping for strength from PINS as it approaches its next earnings release. The company is expected to report EPS of $0.07, up 170% from the prior-year quarter. Our most recent consensus estimate is calling for quarterly revenue of $467.87 million, up 72.05% from the year-ago period.
What is Secret Chats of Telegram
Secret Chats are one of the service’s additional security features; it allows messages to be sent with client-to-client encryption. This setup means that, unlike regular messages, these secret messages can only be accessed from the device’s that initiated and accepted the chat. Additionally, Telegram notes that secret chats leave no trace on the company’s services and offer a self-destruct timer.
