Troubles in Area | StarDate On-line
Area flight is difficult on the human physique. Astronauts lose muscle mass and bone density. They’re uncovered to radiation that will increase the chance of most cancers and different issues. And that’s just the start. Lengthy flights aboard the Worldwide Area Station have led to modifications within the eyes, blood, and mind.
Most astronauts who’ve spent at the very least six months in orbit have reported imaginative and prescient issues. The attention can change form, and connections between the attention and the optic nerve could be frayed. Researchers aren’t certain what causes the issues. It may very well be merely the dearth of gravity, however different elements may very well be at work as effectively.
Astronauts additionally endure a lack of purple blood cells. A latest research discovered that the physique is definitely destroying the cells. And it continues to take action so long as the individual is in area. Cell manufacturing improves after touchdown, however ranges stay low even a yr later. Once more, there’s no confirmed clarification.
One other research discovered that weightlessness additionally “rewires” elements of the mind. A dozen area vacationers had been scanned earlier than and shortly after their journeys, and once more just a few months later. The scans revealed modifications to the connections between elements of the mind that management motor capabilities. And the modifications endured after the return to Earth. Researchers say the mind was adapting to weightlessness, the place shifting is sort of totally different than it’s on Earth.
So a protracted journey to area is not any trip for the human physique.
Script by Damond Benningfield