Questions tagged [asteroids]

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

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29
votes
7answers
7k views

5km artificial planet, with same gravity as on Earth

So, the idea in a story is that in far far future there’s a trend that rich people, they are able to buy themselves planets. Tiny little planets with sizes 4-6 km (3-4 miles) in diameter. The company ...
12
votes
2answers
394 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. ...
17
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9answers
4k views

How difficult would it be to turn the Asteroid Belt into a single body? What's the best method?

The Emperor (may he live forever) plans to visit the Solar System on a rare royal visit in ten years' time. The Bureau for Interplanetary Tidying have decided that the Asteroid Belt is an eyesore that ...
16
votes
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 ...
4
votes
3answers
232 views

Could you liquefy an asteroid to collect its resources?

Suppose you could pump a load of energy into an asteroid at a safe distance. As energy gets added to the object, does it make sense that this could be done in a way to get the asteroid to ...
6
votes
6answers
2k views

Is it easier to mine asteroids than planets if teleportation technology exists?

Inspired by comments to JBH's answer to The worlds between, the consequences of instantaneous FTL. The Premise A technology for instantaneous travel exists, making it possible to travel to any point ...
8
votes
1answer
213 views

Gravity differences on asteroid with an O'Neill cylinder

In my story there is something akin to an Island Three O'Neill cylinder buried vertically into the side of the asteroid Vesta. It is 5 miles across and 20 miles long. The station is buried but is ...
5
votes
7answers
422 views

“Landing” a small asteroid on Earth

I've been poking around similar posts, but none seem to contain the information I'm looking for. I'll try to keep it brief. In the year 20XX, some powerful organizations are trying to "land" an ...
3
votes
2answers
154 views

What happens to asteroids when heated into a plasma?

I'm looking to build a scientifically plausible mining laser for my science fiction setting. The first approach that came to mind was a high-power laser that heats the surface asteroid until it ...
1
vote
6answers
472 views

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 ...
14
votes
1answer
808 views

Geological aftereffects of an asteroid impact on a large mountain range?

For the sake of analogy, let's take the Chixclub impactor and move it a mountain range akin to the modern Himalayas. Obviously we're dealing with an extinction level event here so I'm not concerned ...
10
votes
3answers
359 views

Could I use a series of magnetic asteroids to create a magnetic field for mars?

If I push a couple of magnetic asteroids into mars gravitational field, could they form an interlocking series of magnetic fields able to protect mars from solar winds? Size limits for asteroids is ...
9
votes
7answers
2k views

Could an astronaut in a near-future space ship survive transit through our asteroid belt?

In the near future we may find cargo ships fleeing space pirates! Given that... It's a small cargo ship carrying 10 metric tons of wheat (cargo volume, approximately 13 m3). Total volume: 100 m3. ...
3
votes
7answers
638 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 ...
1
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4answers
1k views

Can the pitch and speed of an asteroid cause a less catastrophic results? [duplicate]

Notice that most of the energy is absorbed by the inside with considerable little damage to the outside. I base this question on the premise of would the Earth and asteroid would act similar raising ...
0
votes
1answer
304 views

Do different angles of strike affect the destructive power of an asteroid?

I'm looking into the destructive power of a 5km asteroid strike, a bit smaller than the k-Pg event. How does the angle of the strike affect the destructive capability of a land-based impact. For ...
-1
votes
1answer
113 views

Asteroids with an atmosphere

What would be the likelihood of an asteroid developing a thin layer of gas? If an asteroid is capable of having an "atmosphere", then how likely would be be for primitive plant life, such as a moss, ...