視界線[天文學術語]

視界線（event horizon），天文學術語。指黑洞的邊界。在此邊界以內的光無法逃離。

event horizon

n.（名詞）

The region, usually described as spherical, marking the outer boundary of a black hole, inside which the gravitational force is strong enough to prevent matter or radiation from escaping.

地平線現象：通常被形容為球面的區域，為黑洞外表分界線的標記，在該標記之內其重力大到足以讓所有的物體或是光線無法逃離