NASA study reveals new, unexpected danger in long-term space travel

By Vignesh Giridharan | Published on 15 Nov 2019
NASA study reveals new, unexpected danger in long-term space travel

A NASA study has revealed a new danger with long-term space travel

Astronauts' blood can either clot or flow in reverse, shows study

This could be a potential speed bump in crewed Mars missions


Working from home?

Don’t forget about the most important equipment in your arsenal

Click here to know more

Scientists have known for quite some time now that long-term space travel takes a severe toll on an astronaut's physical health. In the past, some loss or weakening of eyesight has been observed with astronauts who went aboard the International Space Station (ISS) on expeditions lasting six months or longer. Now, however, a recent NASA study shows that there's another danger with long-term space travel: the astronaut's blood could clot, or worse, even flow in reverse.

The recent study, published in the JAMA Network and authored by Michael B. Stenger of NASA's Johnson Space Center, shows that six out of eleven ISS crew members displayed “stagnant or retrograde flow in the internal jugular vein” (clotting or reversing in blood flow) after about fifty days in space. It also says that one crew member developed an “occlusive internal jugular vein thrombus” (a blood clot) during the expedition. The internal jugular vein is responsible for collecting blood from brain and superficial regions of the face and neck.

According to a recent report by NBC News, experts believe the new finding is not necessarily a death warrant for long-term space travellers but rather an opportunity for scientists to invent necessary medical treatment. “It’s potentially a serious problem,” NBC News quoted Andrew Feinberg of the Johns Hopkins University School of Medicine as saying. “If you get a clot in the internal jugular vein, the clot could travel to the lungs and cause a pulmonary embolism — that’s very dangerous. If that happens on a long-term mission, it could be calamitous.”

At any rate, the recent finding will certainly call into question the feasibility of long-term, long-distance space missions, such as the ones being proposed to put humans on Mars in the near future. A crewed mission to Mars and back could take up to four hundred days, even if the mission involves little or no stay on the Red Planet's surface. In recent times, NASA scientists have also expressed concerns about the risk of energetic particle radiation in long-term space missions.

Vignesh Giridharan

Progressively identifies more with the term ‘legacy device’ as time marches on.

Digit caters to the largest community of tech buyers, users and enthusiasts in India. The all new Digit in continues the legacy of as one of the largest portals in India committed to technology users and buyers. Digit is also one of the most trusted names when it comes to technology reviews and buying advice and is home to the Digit Test Lab, India's most proficient center for testing and reviewing technology products.

We are about leadership-the 9.9 kind! Building a leading media company out of India.And,grooming new leaders for this promising industry.

{ Protection Status