aurora

n. a natural show of coloured lights in the sky, usually seen near the North or South Pole.

n. a luminous atmospheric phenomenon caused by the interaction of solar wind with the Earth's magnetic field, appearing as curtains of light in polar regions.

“We travelled to Iceland in winter specifically to see the green aurora in the night sky.”

“The intensity of the aurora fluctuates according to solar activity, often resulting in spectacular displays of shifting green and violet light across the high-latitude sky.”

Technical

n. the first light of the day in the morning.

n. the dawn or the first appearance of light in the morning sky.

“The poet wrote about the pink aurora rising over the quiet hills.”

“As the aurora began to tint the eastern horizon, the camp stirred into life for the final day of the expedition.”

Literary

n. the Roman goddess of the dawn.

n. the personification of the dawn in Roman mythology, equivalent to the Greek goddess Eos.

“In the old painting, Aurora is shown bringing the light of a new day.”

“Classical poets often invoked Aurora as the herald of the sun, depicting her as a goddess who opens the gates of the east with rosy fingers.”

Formal