light
Latest about light
![null](https://cdn.mos.cms.futurecdn.net/C3S6VSQKeDp8Bnj6gcXWPj-320-80.jpg)
Search is on for Hot Young Stars
By Tiare Devenot last updated
An astronomer uses gamma ray bursts to shine a light on outer space.
![A near-perfect Einstein ring from the galaxy JO418.](https://cdn.mos.cms.futurecdn.net/DaATrgRhT8HyQqfpEJnHPT-320-80.jpg)
Stunningly perfect 'Einstein ring' captured by James Webb Space Telescope
By Harry Baker last updated
A new image using data collected by NASA's James Webb Space Telescope shows off one of the most perfect "Einstein rings" ever captured.
![null](https://cdn.mos.cms.futurecdn.net/SGpcmv39672Q3NXsgBYcb5-320-80.jpg)
Mystery of Weird Sky-Glow Named 'STEVE' Finally Solved
By Mindy Weisberger last updated
Enigmatic STEVE is somewhat like an aurora...and somewhat different.
![null](https://cdn.mos.cms.futurecdn.net/zvAX7ijGh8btkHUPMv7hQd-320-80.jpg)
Video Reveals 'Sprite' Lightning Secrets
By Dave Mosher last updated
Ultra-fast, ultra-bright sprites caught forming in the act.
![the antennas of the Atacama Large Millimeter/submillimeter Array (ALMA), set against the splendour of the Milky Way](https://cdn.mos.cms.futurecdn.net/YuJohJP9HgfW5NYcLfhbSn-320-80.jpg)
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.
![Photo of a blue octopus on the sea floor](https://cdn.mos.cms.futurecdn.net/XSpfpQELqAr9KUDBWghcca-320-80.jpg)
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.
![A strontium lattice optical atomic clock](https://cdn.mos.cms.futurecdn.net/ku3kuzToKPTwbSZwoL4wTc-320-80.jpg)
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.
Sign up for the Live Science daily newsletter now
Get the world’s most fascinating discoveries delivered straight to your inbox.