Mars colonisation is a hype topic. What is the biggest threat for those wishing to take a part in a journey to Mars?

low temperatures
lack of oxygen
poor gravity
cosmic rays
The only ef­fi­cient pro­tec­tion against high en­er­get­ic cosmic ra­di­a­tion, one we are granted with, is Earth magnetic field. Both during a long flight to Mars and through the stay on the planet, that did not form elec­tro­mag­net­ic field, as­tro­nauts would be exposed to ion­iza­tion.

Answers distribution

low temperatures
lack of oxygen
poor gravity
cosmic rays
answers
flagAustralia
0%
6%
6%
87%
16
flagFrance
2%
14%
5%
76%
34
flagSpain
8%
16%
0%
75%
12
flagItaly
10%
5%
10%
73%
19
flagthe Philippines
0%
36%
0%
63%
11
flagSweden
4%
23%
9%
61%
21
flagthe United Kingdom
8%
24%
7%
57%
312
flagUnknown
10%
28%
5%
55%
897
flagPoland
9%
29%
7%
51%
14376
flagGermany
14%
26%
7%
50%
132
flagIndia
9%
29%
8%
50%
86
flagSwitzerland
10%
30%
10%
50%
10
flagthe Netherlands
6%
34%
6%
48%
29
flagthe United States
9%
28%
13%
46%
119
flagBelgium
9%
9%
36%
45%
11
flagCanada
5%
52%
0%
41%
17
flagNorway
30%
35%
0%
35%
20
flagRepublic of Ireland
0%
57%
12%
30%
33

Gender

men55%
women43%
low temperatures
9%
12%
lack of oxygen
28%
34%
poor gravity
6%
9%
cosmic rays
55%
43%

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Mars colonisation is a hype topic. What is the biggest threat for those wishing to take a part in a journey to Mars?
340
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Author: smyru
Illustration: FlyingSinger
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