Ainda não temos significados para "normal brightness".
1This material was two to four times more luminous than the star's normal brightness.
2The difficulty of this was that the sun would remain at its normal brightness the entire time.
3After a while, as the energy dissipated, the star began to fade back to its normal brightness.
4ESO released a press statement on Friday 14 February; at the time of writing, Betelgeuse was at 36% of its normal brightness.
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