"A spectacular celestial phenomenon was observed in the sky today — a bright circular ring around the Sun, known as a 22-degree solar halo. This rare optical event captivated onlookers and ...

A stunning solar halo, known as a "sun halo," is currently visible in the skies over Karachi. Meteorologists attribute this phenomenon to the presence of high-altitude cirrus clouds over the city.

A total solar eclipse will cross North America in April, offering millions of sky-watchers a rare opportunity to see afternoon skies temporarily darken and an illuminated halo appear overhead.

Millions of Americans could be able to see a spectacular solar eclipse on Saturday as the ... sun but doesn't totally obscure it, creating a halo effect. But during a total eclipse, like the ...

The US team said the bandgap gradient was already applied successfully in other types of thin-film solar cells with the aim of improving their open-circuit voltage, adding that it should be used ...