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2 votes

How much time is needed to judge an Earth-like planet to be safe?

As every single other answer already points out: What do you mean by "safe"? There is no absolute safety. Not on Earth, not anywhere else. People will inevitably die. From accidents, disease,...
mcv's user avatar
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0 votes

How much time is needed to judge an Earth-like planet to be safe?

If life on the other planet is based on DNA there could potentially be microbial dangers, but even on earth microbes tend to be very specialized, normally infecting a single species. If the life is ...
Rocky Rococo's user avatar
1 vote

How much time is needed to judge an Earth-like planet to be safe?

Never Remember Deathworld? Or SMAC/X storyline? Either consisted of a sentient planetmind, that in case of Deathworld decided to oppose the base with everything it could, and in case of SMAC/X ...
Vesper's user avatar
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5 votes

How much time is needed to judge an Earth-like planet to be safe?

1 year for basic safety, 20 for high safety. Lots of animals and insects act on some sort of cycle and only are active in certain seasons. There's certainly a risk that some sort of weird lifeform ...
Nepene Nep's user avatar
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21 votes

How much time is needed to judge an Earth-like planet to be safe?

This is a Frame Challenge: Define "safe" Millions of people died from COVID-19 in 20201 and that's after billions of years of evolution, millions of years of experience, and thousands of ...
JBH's user avatar
  • 126k
4 votes

How much time is needed to judge an Earth-like planet to be safe?

Two or three generations. The answer by Richard Kirk mentioned the historical example of cancer by x-rays. There could be subtle things on this planet which interfere with fertility and the germline. ...
o.m.'s user avatar
  • 117k
3 votes

How much time is needed to judge an Earth-like planet to be safe?

Months It depends largely on the organization culture and if individuals are allowed to decide for themselves. As others have said 'safe' is very subjective. Assuming they can send out scout drones ...
Menno van Lavieren's user avatar
10 votes

How much time is needed to judge an Earth-like planet to be safe?

Not all risks can be accounted for, but colonists are (by self-selection) far more comfortable with risk than most people At the end of the day, the thing about life: nobody gets out alive. Frontier ...
William Walker III's user avatar
1 vote

How much time is needed to judge an Earth-like planet to be safe?

How safe do you want it to be? I will assume that "safe" means "it is no more likely to kill you prematurely than Earth is." There is a reason why there are discussions of "...
Mary's user avatar
  • 29.1k
2 votes

How much time is needed to judge an Earth-like planet to be safe?

I assume the risk is something quite unexpected. They have not landed on something looking like a massive lava flow that feels still warm in parts, and seems to come from the distinctly conical ...
Richard Kirk's user avatar
  • 10.2k
0 votes

Why can’t we export everything needed to heat mars up from earth. So why not use the things that are heating earth right now on mars. We have enough

Even the most wildly optimistic rates for exporting mass to low Earth orbit with present-day or near-future technologies — for instance, in regards to Starship — are at least hundred US dollars per ...
KEY_ABRADE's user avatar
  • 13.1k
3 votes
Accepted

Would mining asteroids cause meteorites

Scenario 1: Company redirects a big asteroid into planetary orbit (as it is easier to work on it while closer to the planet), then makes controlled explosion to crack it into smaller manageable parts ...
David162795's user avatar
4 votes

Would mining asteroids cause meteorites

Unlikely To start with, with the likely size of the fragments coming off the asteroid, not a single one is making it to the ground of a planet with a dense atmosphere. However, if they are big and ...
Bubbles's user avatar
  • 1,666
8 votes

Would mining asteroids cause meteorites

Yes, it is possible that explosions can cause meteorites: escape velocities for asteroids are in the order of few m/s, and such velocities are also achieved by the fragments resulting from an ...
L.Dutch's user avatar
  • 291k
8 votes

How long would a post-apocalyptic space colony take to recover modern levels of technology?

The colonies have some manufacturing capability, mainly confined to refining lunar rock and ice into usable materials, manufacture of ship and habitat parts, fuels, farming, and the like. So not ...
L.Dutch's user avatar
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