Re: Let's just chat about what interests us).
Reply #1 –
Do you mean the travel itself or staying on Mars?
The little i have followed this topic in the tech sites suggest that they will use Martian earth to shield from radiation as Mars does not really have much of an atmosphere or a magnetic field. The little atmosphere Mars does have easily evaporates from the planet since the magnetic field is so weak and almost non-existant. I doubt we can colonize Mars in the next 50 years, the issue is water and growing food. It can be done but it will be very expensive to get going.
We have actually a bit of the same problem on earth, the so called magnetic anamoly in South-America as the magnetic field is changing rapidly here on earth. The magnetic poles are traveling and moving fast. The north-pole is moving towards Siberia at a very fast rate, while the southern one is almost outside of the Antarctic landmass.
Satelites that are traveling over the magnetic anamoly has often big problems, and many have died due to the radiation in this area above earth. X-ray machines is even difficult to operate on land in this area, and this area is now growing towards Africa.
No one knows what is causing this drift though or weakening, it started in the 1850s as far as anyone knows, both the movement and the weakening of the magnetic field in south-america, but we are due for a polar-shift as it has been 780000 years since the last one, and it is a cycle no one really understand. Some suggest we have had others too much more recent.
Where these poles will end up when the shift happens is uncertain. Some suggest just a reversal, while others suggest the south-pole ending up in Peru while the northern one ends up just outside India, flipping the earth 90 degrees, meaning Europe will be tropical.
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