探索 (tàn suǒ) is a compound verb meaning 'to explore' or 'to probe'—often with intention, curiosity, or scientific purpose. The first character 探 (tàn) means 'to investigate' or 'to seek out,' suggesting active searching; the second character 索 (suǒ) means 'to search for' or 'to trace,' reinforcing the idea of deliberate, thorough inquiry. Together, they emphasize a methodical, open-minded effort to discover something unknown—whether a physical place, an abstract concept, or a new field of knowledge.

This word is commonly used in academic, scientific, travel, and technological contexts—for example, exploring outer space, researching historical mysteries, or investigating social phenomena. It carries a formal, positive connotation and is rarely used for casual or superficial looking-around (for which you’d use 看 or 找). 探索 often appears in written Chinese, news reports, and educational materials, and frequently pairs with nouns like 宇宙 (universe), 新领域 (new fields), or 奥秘 (secrets).