Latest about light
Ultraprecise atomic optical clocks may redefine the length of a second
The length of a second hasn't been updated in 70 years, but ultraprecise atomic optical clocks are on track to change that.
Can anything travel faster than the speed of light?
Here's the science behind whether anything can travel faster than the speed of light.
Light pollution: Environmental impact, health risks and facts
Reference Discover the facts about light pollution and its impact on the environment and our health.
How do energy saving light bulbs work?
Reference Energy saving light bulbs: mechanics, efficiency and designs
Your pupils can count … sort of
New research suggests a person's pupil size can change based on the number of objects an individual observes in their visual field.
What would happen if the speed of light were much lower?
Here's what would happen if the speed of light were orders of magnitude slower.
Why does outer space look black?
Several cosmic characteristics, including the lack of an atmosphere, lend space its dark color.
Amazing astrophotography: How some of the most iconic space images were captured
These incredible space photos were taken using advanced techniques to reveal some of the wonders in the universe.
