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Mystery of Weird Sky-Glow Named 'STEVE' Finally Solved

By Mindy Weisberger last updated

Enigmatic STEVE is somewhat like an aurora...and somewhat different.

Particle Physics
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Video Reveals 'Sprite' Lightning Secrets

By Dave Mosher last updated

Ultra-fast, ultra-bright sprites caught forming in the act.

Weather
Column-shaped red sprites

Brilliant Red Sprite Lightning Caught on Camera

By Becky Oskin last updated

Weather
the antennas of the Atacama Large Millimeter/submillimeter Array (ALMA), set against the splendour of the Milky Way

Why do stars twinkle?

By Colin Stuart published

Stars appear to twinkle because the light from these distant objects passes through wobbly air in the atmosphere.

Astronomy
Photo of a blue octopus on the sea floor

How do octopuses change color?

By Harry Baker published

Octopuses are one of the most successful camouflaging animals in the world. But exactly how they pull off their rapid, high-resolution color changes is still a mystery.

Octopuses
A strontium lattice optical atomic clock

Ultraprecise atomic optical clocks may redefine the length of a second

By Tia Ghose published

The length of a second hasn't been updated in 70 years, but ultraprecise atomic optical clocks are on track to change that.

Particle Physics
Artist's impression of beams of light

Can anything travel faster than the speed of light?

By Joe Phelan published

Here's the science behind whether anything can travel faster than the speed of light.

Astronomy
Light pollution seen from Pic du Midi de Bigorre Observatory

Light pollution: Environmental impact, health risks and facts

By Scott Dutfield published

Reference Discover the facts about light pollution and its impact on the environment and our health.

Reference
Energy saving light bulbs being put in a ceiling light

How do energy saving light bulbs work?

By Mark Smith published

Reference Energy saving light bulbs: mechanics, efficiency and designs

Reference
An eye

Your pupils can count … sort of

By Yasemin Saplakoglu published

New research suggests a person's pupil size can change based on the number of objects an individual observes in their visual field.

Education
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