The visual effect is known as a lunar halo or a 22-degree halo, and it's caused by light from the moon hitting millions of ...

CAPE CANAVERAL, Fla. (AP) — Europe’s Euclid space telescope has detected a rare halo of bright light around a nearby galaxy, astronomers reported Monday. The halo, known as an Einstein ring, encircles ...

Skywatchers have some blockbuster events to look forward to this month, as October brings about the annual Orionids meteor shower, a rare “ring of fire” solar eclipse, the full Hunter’s Moon, and some ...

The ring of light surrounding the centre of the galaxy NGC 6505, captured by ESA’s Euclid telescope, is a stunning example of an Einstein ring. NGC 6505 is acting as a gravitational lens, bending ...

PETOSKEY — If you looked up at the sky today and noticed a glowing ring around the sun, you’re not alone. That bright, circular halo is a natural optical phenomenon known as a sun halo, and while it ...