Ultra-violet

Astronomers have watched a supermassive black hole take two bites of a star, and predicted when it might go back for a third. If it does, this should make for an intriguing stellar light show.

NASA has officially selected a new mission – the Ultraviolet Explorer, or UVEX. By scanning the skies in UV light, it will be able to study the hottest objects and fleeting events like supernovae, and create a detailed new map of the cosmos.

It’s easy to forget that most animals don’t see the world the way humans do. In fact, many perceive colors that are invisible to us. But now, for the first time, scientists have found a way to capture footage as seen by animals, and it's mesmerizing.

An intriguing new glue can basically be switched on and off on demand. The adhesive sticks together when hit with one wavelength of light, and breaks apart with another, allowing it to be removed and reused easily – potentially, even underwater.

Scientists in Japan have demonstrated a technique that allows them to remotely control the movements of worms. By implanting light-sensitive proteins into the organisms, the team was able to make them move under green light and stop under UV.

Astronomers have discovered the most distant object ever seen – a strange galaxy some 13.5 billion light-years away. Named HD1, the galaxy may house a never-before-seen population of stars, or a supermassive black hole mysteriously ahead of its time.

Climate change can feel inevitable, but we’ve stepped up to the challenge before. New modeling shows how bad things would be if CFCs hadn’t been banned decades ago – depleted ozone would've increased UV exposure and stopped plants capturing carbon.

Last year, LG launched some true wireless earphones that came with a charging case designed to blast the buds with UV light to kill any bacteria. Now the company has brought the latest version of the bug-killing mobile music solution to the US.

Instead of heating of ABS or PLA plastic filaments like the 3Doodler from WobbleWorks, the CreoPop uses light-sensitive inks that solidify when exposed to UV light, so sketchers young or old don't need to worry about having to steer clear of the piping hot creative end.

Most UV-monitoring wristbands favor function over fashion, which is why Netatmo has launched JUNE, a UV-tracking bracelet and accompanying app aimed at helping users to better manage their sun exposure and look fashionable doing it.

Computer keyboards have been found to be home to worrying amounts of harmful microbes, but Vioguard believes its new self-cleaning keyboard offers a possible solution.

Researchers at New York University have developed an almost invisible flash photography system, the dark flash system