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Results tagged with science-based
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user 349
For questions that require plausible (better than suspension-of-disbelief) answers based on Real World science that are not necessarily constrained to the known limits of Real World science. Contrast with the hard-science, science-fiction and internal-consistency tags. This tag may not be used alone. This tag may not be used with the science-fiction, hard-science, or internal-consistency tags.
4
votes
How could a specific asteroid be diverted to impact the earth?
Rockets. And math.
The way you make an asteroid meet up with (read: smash into) another body is exactly the same way you make a spacecraft meet up with (read: dock with) another craft: You adjust its …
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13
votes
4
answers
2k
views
What if we never stopped growing?
As I'm sure you're all aware, human beings at some point in their lives -- generally post-puberty or so -- stop growing. As a result, there's some easily-predictable measures, such as the average heig …
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7
votes
2
answers
1k
views
Seasons without an axial tilt?
Let's assume we have an otherwise Earth-like planet orbiting a star just like our own. Our planet has an axial tilt of 0 degrees, meaning its axis is perpendicular to its orbital plane.
Could this pl …
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37
votes
Accepted
What would block a planet from seeing the stars?
Clouds
Perpetual cloud cover -- such as what you might find on Venus -- would of course obscure the night sky and the stars therein. The caveat here is that you would likely have people wondering "Wha …
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18
votes
Can whiteout/snowstorm conditions be coupled with heavy fog?
Contrary to the previous answers, as someone who actually lives in these climes, I can tell you that yes, absolutely, you can have fog at these temperatures.
It is not, however, your "typical" fog -- …
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18
votes
Wouldn't building down make more sense when colonizing a dead planet?
Because the dome is impermeable; rock isn't.
Or more accurately, the ground is not impermeable. Cracks run this way and that, soil lets gases seep through it, and it all shifts and cracks anew freque …
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11
votes
Does the sun being blocked affect electricity?
Nope.
The dust in the air may generate a static charge, which in turn may increase lightning (even in the absence of storms), and blocking the sun will of course limit the effectiveness of photovolta …
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14
votes
9
answers
6k
views
Automobiles after the apocalypse
So last year I started writing a post-apocalyptic story, and then realized I had no idea what the world was really like, and quite a few things just didn't seem to make sense.
One of the biggest that …
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8
votes
Accepted
Can cities and homes stop being functional during an impact winter where the only option is ...
As Tim B points out in his answer, and I pointed out in mine to your original Impact Winter question, the temperatures are only going to drop by about 13 degrees C, or less than 25 degrees F. Yes, it …
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9
votes
Accepted
Where would an asteroid have to hit earth to cause an impact winter?
Pretty much everything you need is right there on that page. Here's a breakdown that largely re-digests your link, though I'll toss in a few extra tidbits to round it out a bit more.
Surprise
This …
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14
votes
How do I make oxygen for a generation ship?
The most common solution to this approach is to try and mirror Earth's biosphere. Since you need water, food, and air, you need a solution that provides all 3.
Hydroponics (and its closely-related tw …
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8
votes
What are the power options for intelligent humanoid robots?
The power requirements are going to be highly variable. Just think about today's electronics -- you could put a set of AA batteries into your TV remote and have it work for years, but an identical set …
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17
votes
3
answers
1k
views
Can we breathe the moon's crust?
According to this answer to what the moon is made of, the moon's crust is, among other things, 43% oxygen.
Assuming we were to go back to the moon within the next couple of years with the goal of est …
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8
votes
Accepted
Would living underground during an impact winter be ideal?
Underground shelters could help improve survivability in the first days/weeks after an impact, as it provides shelter from raining debris and can also allow survivors to breath cleaner air that has fe …
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9
votes
Accepted
What can we do to Mars to give it a survivable atmosphere?
Oxygen is easy -- import/manufacture more and fill your atmosphere with it. The hard part will be in getting the atmosphere to begin with; if you can do that, the rest is just details.
But here's the …
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