Questions tagged [asteroids]

For questions about utilizing asteroids, asteroids impacts and asteroids physical properties.

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6answers
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How to stop an asteroid from hitting Earth without nukes?

You are in charge of the world, with technology about the same as we have now, except that a while back the leaders of the world decided that nukes are too powerful, so they destroyed them all and ...
16
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2answers
2k views

Humanity’s first effort at moving a planet

What technology will humanity use the first time it moves a planet? In the near-ish future, humanity has colonized Mars which has since become self-sustaining and independent, as well as various ...
8
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3answers
480 views

What happens to the leftovers from asteroid mining?

I understand that asteroids are very very far apart, but everything I am reading about asteroid mining omits any information about what happens to the waste rock or "tailings" that would presumably be ...
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2answers
291 views

The speed and mass of this asteroid

Background: In the world of Krynn (Dragonlance) there was this worldwide catastrophe, the Cataclysm. What happened: Gods became angery to a single person, so they threw an asteroid at him, ...
2
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5answers
608 views

Asteroid making a hole through the crust

How plausible would it be for an asteroid impact to create a hole through the Earth's crust into the mantle? What sort of traces would such an impact leave behind? Would it be survivable by at least ...
1
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1answer
79 views

Measurements of an asteroid replacement

Say I wanted to create an impact similar to an asteroid with a diameter of 1.5 kilometer/1 mile with an iron core. It would be going about 18km/s on a 90 degree angle. An impact to level cities but ...
22
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8answers
5k views

Extremely small planet to live on

In the mobile game "The Path To Luma", the main hero travels to very tiny planets. Let's not think about where is the sun and how we leap through such small planets. What I want to ask is, if there is ...
6
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2answers
257 views

Moving asteroids into a planet's orbit to increase rotation to produce a magnetic field

I was doing research on the terraforming of planets with a solid iron core and no magnetic field and saw a few suggested ideas for starting a magnetic field on Mars that got me thinking. Most of what ...
18
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16answers
3k views

What would cause the land to “rise” in a future, post-apocalyptic world?

We are in the future in northern North America (U.S or Canada). The land has "risen" (or more accurately, filled in) with several hundred feet of earth and sand and silt so that a modern city will ...
7
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6answers
433 views

What issues would an AI asteroid mining stations have to be prepared for?

Your company has just been contracted to develop a purpose built AI. The purpose of this AI is to control a mining station that will be anchored within an asteroid belt. The space station will be ...
3
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7answers
636 views

How to explain Earth-like gravity in small asteroids?

I'm working on a sci-fi game about conquering little asteroids (about 1 km diameter). You can go into one of them and make it Earth-like so other humans, animals or plants can live there. To do this ...
12
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2answers
393 views

What is the smallest planetary mass that can prevent 'me' from flying off into space?

I have a series of astronauts landing on an asteroid. I'd like to know the threshold of mass for them to not fly off into space. Specifications: Assumption is all astronauts are under 180cm, 80kg. ...
4
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4answers
159 views

Resources to possess, and restrict in asteroid belt

Assume 100 years from now we have established sustainable bases on Mars, to the point where a colony ship making the trip to Mars is not "breaking news" anymore. There are a few reasons to begin to ...
2
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2answers
598 views

Impacting an Asteroid into the South Pole

Let's say that a giant space rock (10 km) is Impacting the Geographic South Pole. If humanity is at its present-day level, what would be the climatical and technological impact on Humans and the Earth?...
2
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3answers
275 views

What direction is my asteroid coming from?

I have an asteroid. I want it to hit Earth. The best way to hit Earth is from behind the Sun, which makes it harder to detect you if you're an asteroid. Now, I have a basic understanding of things ...
3
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3answers
192 views

Using Mars as a waystation for asteroid mining

Would there be any benefit to this? At first I was thinking if you had an outpost on Mars you could spend less money on the actual trip to the belt itself, but I'm not sure if having your launch ...
2
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1answer
117 views

What would happen to an asteroid if we somehow increased gravity on it?

The scenario is that an asteroid has been found and converted into a travelling interstellar space colony. Using some undefined future sci-fi tech, the occupants of the colony have increased gravity ...
15
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5answers
2k views

Asteroid impact. How big does it have to be to globally affect plate tectonics?

I want to know about the plausibility and required parameters of the following scenario: Take an Earth-like planet, about the same size, composition and gravity. It has no plate tectonics to speak of....