YSK: If you saw something bright and fast in the sky -- like a huge shooting star -- it maight be a fireball. You can report it to the American Meteor Society.
from /r/YouShouldKnow
YSK：如果你在天空中看到明亮而快速的東西--比如一顆巨大的流星--那可能是一個火球。你可以向美國流星協會報告。
YSK：如果你在天空中看到明亮而快速的東西--比如一顆巨大的流星--那可能是一個火球。你可以向美國流星協會報告。
YSK: If you saw something bright and fast in the sky -- like a huge shooting star -- it maight be a fireball. You can report it to the American Meteor Society.
from /r/YouShouldKnow