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Source: Getty Images

by Max Plenke

Spending extended time in space wreaks havoc on the body. You lose bone density. Your muscles waste away. And according to a new study published Monday in the journal Scientific Reports, you also may get “space brain,” a form of brain damage caused by galactic cosmic ray radiation — and it could be a barrier in the pursuit of colonizing Mars.

In a rodent study performed byand his team at the researchers found that radiation exposure ecaused long-term brain damage to rodents, leaving them with cognitive impairment and .

Most surprising, Limoli said, was how persistent the damage to the animals’ cells actually was. “In most cells there’s a level of recovery,” he said on a phone call Monday. “We followed up six weeks, 24 weeks later. …


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Photo: NASA/JPL-Caltech/GSFC/JAXA

by Kelly Dickerson

There are things all around us that we can’t see.

If humans could see in wavelengths beyond visible light, the whole cosmos would look like a glowing, sparkling ball of light. Some of that extra light we can’t see is made of X-rays that regularly crash into Earth’s atmosphere. Now a new NASA study has returned some puzzling observations on those X-rays. Earth is getting peppered with X-rays, and scientists can’t figure out where they’re coming from.

NASA’s DXL sounding rocket, which stands for Diffuse X-ray emission from the Local Galaxy, studied X-rays hitting Earth’s atmosphere and discovered that some of the X-rays come from solar wind, and some come from a clump of hot material surrounding our solar system called the Local Hot Bubble. But the research also revealed there’s a clump of really high-energy X-rays that can’t be explained by solar wind or the Local Hot Bubble. …


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Source: Curiosity Stream

by Kelly Dickerson

Stephen Hawking has issued yet another warning regarding how aliens could be incredibly dangerous and why we’d be foolish to try and communicate with them.

“If intelligent life has evolved (on a nearby exoplanet), we should be able to hear it,” Hawking says in a new online film, titled Stephen Hawking’s Favorite Places. “One day we might receive a signal from a planet like this, but we should be wary of answering back. Meeting an advanced civilization could be like Native Americans encountering Columbus. That didn’t turn out so well.”

“Meeting an advanced civilization could be like Native Americans encountering Columbus. …

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