Here are a few options for a description for the WordPress post tag “天文” (Tiānwén, meaning “Astronomy” in Traditional Chinese), with varying levels of detail and focus:

**Option 1: Concise and General**

> 探索宇宙的奥秘，了解星辰、行星、星系等的天文知识。 (Tànsuǒ yǔzhòu de àomì, liǎojiě xīngchén, xíngxīng, xīngxì děng de tiānwén zhīshì.)
>
> *Translation: Explore the mysteries of the universe, understand astronomical knowledge like stars, planets, galaxies, and more.*

**Option 2: Slightly More Descriptive**

> 有關星空、宇宙、星體及相關科學研究的資訊。包括星象觀測、天文歷史、太空探索等。 (Yǒu guān xīngkōng, yǔzhòu, xīngtǐ jí xiāngguān kēxué yánjiū de zīxùn. Bāokuò xīngxiàng guāncè, tiānwén lìshǐ, tàikōng tànsuǒ děng.)
>
> *Translation: Information related to the starry sky, the universe, celestial bodies, and related scientific research. Includes celestial observations, the history of astronomy, and space exploration.*

**Option 3: Focused on a Specific Interest (e.g., Education/Passion)**

> 喜愛天文的朋友們，一同分享觀星、學習及探索宇宙的熱情！這裡會提供天文知識、觀測技巧、以及最新的宇宙新聞。 (Xǐ’ài tiānwén de péngyoumen, yī tóng fēnxiǎng guānxīng, xuéxí jí tànsuǒ yǔzhòu de rèqíng! Zhèlǐ huì tígōng tiānwén zhīshi, guāncè jìqiǎo, yǐjí zuìxīn de yǔzhòu xīnwén.)
>
> *Translation: For astronomy enthusiasts, let’s share the passion for stargazing, learning, and exploring the universe! This tag will provide astronomical knowledge, observation techniques, and the latest cosmic news.*

**Option 4: Formal and Academic**

> 涵蓋天文學各個領域，包括天體物理、宇宙學、行星科學、以及天文學的相關研究及發現。 (Hángài tiānwénxué gè gè lǐngyù, bāokuò tiāntǐ wùlǐ, yǔzhòuxué, xíngxīng kēxué, yǐjí tiānwénxué de xiāngguān yánjiū jí fāxiàn.)
>
> *Translation: Covering various fields of astronomy, including astrophysics, cosmology, planetary science, and related research and discoveries in astronomy.*

**Key Considerations when choosing:**

* **Your Audience:** Who are you writing for? A casual audience or a more academic one?
* **Content of your Posts:** What kind of content will you be tagging with “Astronomical”? (e.g., news, how-to’s, research summaries)
* **Length:** Keep it concise and easy to read. WordPress tag descriptions are often displayed in a list format, so shorter is generally better.

Choose the one that best fits the tone and content of your blog. You can always adjust it later! Remember to enter *one* of these options into the “Description” field when editing the tag “天文” within your WordPress admin panel.