noun (plural auroras or aurorae /ôˈrôrē/)
1A natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, usually near the northern or southern magnetic pole.
[borealis from Latin, 'northern', based on Greek Boreas, the god of the north wind; australis from Latin, 'southern', from Auster 'the south, the south wind']
More example sentences
- The Hubble Space Telescope has spotted auroras near the poles of both Saturn and Jupiter.
- Gaps in the magnetosphere also allow for one of Earth's most beautiful, eerie phenomena: the aurora borealis, or northern lights.
- Bound to the Earth, our only naturally occurring experience with space weather comes from what we can see with our eyes: eclipses, comets, auroras, and sunspots.
- More example sentences
- Nevertheless, the potential exists for periods of strong auroral storm conditions developing during the next several days (at least).
- There was an exceptional auroral glow over the entire sky.
- Severe solar weather is often heralded by dramatic auroral displays, northern and southern lights, and magnetic storms that occasionally affect satellites, radio communications and power systems.