Tn̂g-bóe-chhiⁿ (-chheⁿ, comet) sī leh se̍h chheⁿ ê 1 chióng chhiⁿ-thé, i nā khah oá chhiⁿ ê sî, chhiⁿ ê hok-siā ē éng-hióng tio̍h tn̂g-bóe-chhiⁿ-hu̍t (comet nucleus), chō-chiâⁿ tn̂g-bóe-chhiⁿ-mo͘ (coma) ham boé-liu. Tn̂g-bóe-chhiⁿ-hu̍t pún-sin sī chio̍h-thaû, peng, eng-ia cho͘-sêng ê sè lia̍p he̍k-chhiⁿ. Tn̂g-bóe-chhiⁿ nā khah óa tōa lia̍p ê chheⁿ-thé, i ê kúi-tō ē siū kan-jiáu lâi piàn-hòa, sīm-chì ē chaú ji̍p-khì chhiⁿ--nih choăⁿ o͘-iú--khì, iah sī éng-kiú chaú lī-khui, bē koh tńg-thâu. Tn̂g-bóe-chhiⁿ iū-koh hō chò sàu-chhiú-chhiⁿ (-chheⁿ), hūi-chhiⁿ (-chheⁿ), téng-téng.