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Here's what happens when our sun dies
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This illustration made available by NASA on March 29, 2018 shows the twin Mars Cube One (MarCO) spacecraft flying over Mars with Earth and the sun in the distance. The MarCOs will be the first CubeSats - a kind of modular, mini-satellite - flown into deep space. They're designed to fly along behind NASA's InSight lander on its cruise to Mars. (NASA/JPL-Caltech via AP) - photo by Herb Scribner
Some scientists have figured out what will happen to the sun once it dies.

University of Manchester scientists say they've determined the sun will become a bright ring of cosmic dust once it dies, according to a new study published May 7 in the journal Nature Astronomy.

The scientists wondered if the sun would turn into a planetary nebula after it dies, which is the case for 90 percent of all active stars. Most stars that go from a red giant to a white dwarf often go through this process, according to Yahoo! News.

But scientists remained unsure if this would happen for our sun since, they said, it was smaller than most stars.

The researchers say the suns ring will be fainter than most. According to Quartz, the study adds support to one side of a lengthy debate within the scientific community about how bright the suns cosmic ring would be once the star decides to die.

According to The Guardian, older computer models predicted the sun would just lose its outer layers and that the core would heat up slowly, meaning the outer layers wouldnt glow at all, and the dust ring wouldnt be seen.

We found that stars with mass less than 1.1 times the mass of the sun produce fainter nebula, said Albert Zijlstra, of the University of Manchester, in a press release on the study. This is a nice result we now have a way to measure the presence of stars of ages a few billion years in distant galaxies.

Dont expect to see this ring anytime soon, though. The sun will likely survive for another 10 billion years.
Its toxic: New study says blue light from tech devices can speed up blindness
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A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers. - photo by Herb Scribner
It turns out checking Twitter or Facebook before bed is bad for your health.

A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers.

That process can lead to age-related macular degeneration, which is a leading cause of blindness in the United States, according to the researchs extract.

Blue light is a common issue for many modern Americans. Blue light is emitted from screens, most notably at night, causing sleep loss, eye strain and a number of other issues.

Dr. Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, said our constant exposure to blue light cant be blocked by the lens or cornea.

"It's no secret that blue light harms our vision by damaging the eye's retina. Our experiments explain how this happens, and we hope this leads to therapies that slow macular degeneration, such as a new kind of eye drop, he said.

Macular degeneration is an incurable eye disease that often affects those in their 50s or 60s. It occurs after the death of photoreceptor cells in the retina. Those cells need retinal to sense light and help signal the brain.

The research team found blue light exposure created poisonous chemical molecules that killed photoreceptor cells

"It's toxic. If you shine blue light on retinal, the retinal kills photoreceptor cells as the signaling molecule on the membrane dissolves," said Kasun Ratnayake, a Ph.D. student researcher working in Karunarathne's cellular photo chemistry group. "Photoreceptor cells do not regenerate in the eye. When they're dead, they're dead for good."

However, the researchers found a molecule called alpha-tocopherol, which comes from Vitamin E, can help prevent cell death, according to Futurism.

The researchers plan to review how light from TVs, cellphones and tablet screens affect the eyes as well.

"If you look at the amount of light coming out of your cellphone, it's not great but it seems tolerable," said Dr. John Payton, visiting assistant professor in the UT Department of Chemistry and Biochemistry. "Some cellphone companies are adding blue-light filters to the screens, and I think that is a good idea."

Indeed, Apple released a Night Shift mode two years ago to help quell blue lights strain on the eyes, according to The Verge. The screen will dim into a warmer, orange light that will cause less stress on the eyes.