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2024 年 4 月 8 日

庞士-布鲁克斯彗星多变的离子尾
影像提供与版权: Shengyu Li & Shaining

说明: 彗星的彗尾会如何变化?这会因彗星而异。如这幅摄于3月6日至14日(由上到下)9天期间的细致主题影像序列所示,彗星12P/庞士-布鲁克斯的离子尾展现出剧烈的变化。在某些天,彗星的离子尾相对较长、结构复杂,但并非每天如此,而且变化也通常不会持续。会造成彗尾变化的原因,包括彗核喷发物质的速率、路过的太阳风之强度和复杂性,以及彗星的自转速率。在一周之中,彗尾视觉上的变化,还包括因地球的视角改变所造成的变化。一般而言,因彗星排放的气体受到太阳风的推送,其离子尾会指离太阳。今天,对于那些能够看见太阳被月球完全遮掩的人们来说,庞士-布鲁克斯彗星或许有机会成为突然在中午现身的罕见彗星。



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2024 年 4 月 8 日

庞士-布鲁克斯彗星多变的离子尾
影像提供与版权: Shengyu Li & Shaining

说明: 彗星的彗尾会如何变化?这会因彗星而异。如这幅摄于3月6日至14日(由上到下)9天期间的细致主题影像序列所示,彗星12P/庞士-布鲁克斯的离子尾展现出剧烈的变化。在某些天,彗星的离子尾相对较长、结构复杂,但并非每天如此,而且变化也通常不会持续。会造成彗尾变化的原因,包括彗核喷发物质的速率、路过的太阳风之强度和复杂性,以及彗星的自转速率。在一周之中,彗尾视觉上的变化,还包括因地球的视角改变所造成的变化。一般而言,因彗星排放的气体受到太阳风的推送,其离子尾会指离太阳。今天,对于那些能够看见太阳被月球完全遮掩的人们来说,庞士-布鲁克斯彗星或许有机会成为突然在中午现身的罕见彗星。

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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.

Find Channels On Telegram?

Telegram is an aspiring new messaging app that’s taking the world by storm. The app is free, fast, and claims to be one of the safest messengers around. It allows people to connect easily, without any boundaries.You can use channels on Telegram, which are similar to Facebook pages. If you’re wondering how to find channels on Telegram, you’re in the right place. Keep reading and you’ll find out how. Also, you’ll learn more about channels, creating channels yourself, and the difference between private and public Telegram channels.

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