aurora

• Fenômeno atmosférico luminoso formado por faixas ou cortinas de luz colorida no céu, causado por partículas carregadas do Sol que interagem com o campo magnético da Terra, especialmente nas regiões polares. Também pode designar o clarão rosado do amanhecer.

A noun referring to an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force.

1. Dawn or first lightB2formal

   The initial appearance of light in the sky before sunrise; the beginning of day.

   Aurora

   • The aurora of the morning painted the sky in soft hues.
   • He rose with the aurora to begin his journey.
   • The poet described the aurora as a herald of hope.

   Sinônimosbreak of daycockcrowdawndawningdaybreakdaylightdayspringfirst lightmornmorningsunrisesunup

   Antônimosduskeveningnightfalltwilight

2. Atmospheric light displayB1formal

   A natural light display in the sky, especially in polar regions, caused by the collision of charged solar particles with Earth's magnetic field.

   aurora polar

   • The aurora borealis lit up the Arctic sky with green and purple ribbons.
   • Tourists travel to Norway to witness the aurora.
   • Scientists study the aurora to understand solar activity.

   Sinônimosnorthern lightssouthern lights