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At least three separate optical phenomena are visible in the new images. Each of which is created by light refracting through millions of perfectly aligned ice crystals in the upper atmosphere.

The extremely rare kaleidoscopic circles have a surprising Earth-based origin.

These "greedy" eels likely retreated into the gloomy depths of underwater caves in search of tasty crustaceans and are adapting to the darkness by going blind, one eye at a time.

In the early universe, gravity may have been capable of creating light, a new theoretical paper finds.

Scientists who have thrown a single atom from one pair of optical tweezers to another say that the feat could be used to build better quantum computers.

A mysterious "whirlpool" of light temporarily shone in the night sky above Hawaii's Mauna Kea. Experts think it was linked to a SpaceX launch.

C/2022 E3 (ZTF), a comet that has recently made headlines as it flies closer to Earth, briefly developed an ethereal third tail thanks to a weird optical illusion.

If you have the right vantage point, a rainbow might look circular. Here's the science behind why some rainbows look like arches and others don't.

The International Astronomical Union has issued a warning over the newly launched BlueWalker 3 satellite, which is causing interference for both optical and radio telescopes.

Astronomers have created a colorful interactive map of more than 200,000 galaxies and quasars spanning the lifespan of the cosmos.