aurora

• Nom désignant un phénomène lumineux atmosphérique consistant en des bandes ou nappes de lumière colorée, provoqué par des particules chargées du soleil suivant les lignes du champ magnétique terrestre, visible principalement près des pôles.

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.

   Aurore (début du jour)

   • 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.

   Synonymesbreak of daycockcrowdawndawningdaybreakdaylightdayspringfirst lightmornmorningsunrisesunup

   Antonymesduskeveningnightfalltwilight

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.

   Aurore polaire (aurore boréale / australe)

   • 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.

   Synonymesnorthern lightssouthern lights