TECH & SCIENCE

"It's not just a rare chance event. There has to be a mechanism to form them," study author Anna Ciurlo told "Newsweek."

Betelgeuse a nearby red supergiant star which is up to 20 times more massive than our sun.

The edit button is often requested by Twitter users, but Dorsey countered by noting that implementing the feature could have a number of unfortunate consequences.

"The purple lights are always there but don't usually light up the sky like this," said employee Cara Smith.

"The DPRK can be considered the safest country in the world. As long as you have a basic common-sense and respect for the culture," the conference website claims. The U.N. disagrees.

Researchers identified a naturally-occurring molecule in the brain that targets the same receptors as marijuana, possibly explaining why people find the drug relaxing.

New research adds weight to the idea that people became less hairy via sexual selection, with results suggesting women with higher levels of disgust prefer clean-shaven men.

Research adds to evidence showing how archaic species shaped modern humans.

"Australia. Our hearts and thoughts are with you," Koch wrote in a Twitter post.

They have previously survived in the vacuum of space.