Questions tagged [asteroids]

For questions about rock particles or large rocky bodies in space, typically in orbit around a star. Contrast with "meteors", space rocks falling to planetary surfaces. Whereas asteroids are objects to be encountered during space travel, meteors are a space weather phenomenon observed on planets.

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What if a meteorite hit Roswell, NM in 1947? [closed]

I have always been interested in alternate histories that dramatically affect the course, duration, or intensity of 20th century spacefaring. One of the issues that has precluded large-scale ...
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Asteroid mining: Good for the environment?

What if there was a binding global resolution passed tomorrow mandating that all countries gradually close down their terrestrial resource extraction sites and instead source from asteroid mines? ...
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Logistics of how to mine an asteroid [duplicate]

How would one go about mining an asteroid in a broad sense? This question not in the mining itself, but location of the mining. Say you have located an asteroid in that would like to mine. Which ...
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What would be the effect(s) of high-speed plasma impacting a planet?

As a follow-up to this question, what would be the effect(s) of a high-speed of super-heated plasma entering and impacting on a planet? The planet is about the size of 1.2x Earth(s), with a similar ...
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What would be the effect(s) of this asteroid?

"At this very moment we face a threat insurmountable to Man. We are faced with two options. Stay on Earth and die, or leave Earth to space." - UN Preservation Council, CE 2047 Earth, year CE 2047 An ...
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How big could a meteor crater be without causing significant secondary effects?

I need to wipe out a city. Not a huge one (I won't let them grow beyond a certain limit), but big enough to need to do some pretty serious damage. Let's say something similar in size to Pompeii. (yes.....
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Is it possible for a large planetary body to embed itself onto the Earth?

With the proper composition and mass, is it possible for a planetary body to collide with Earth and embed itself onto the mantle? To clarify, while immense destruction would undoubtedly occur to the ...
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What would an asteroid impact feel like to someone standing on the moon?

On the Earth, with our atmosphere, even small objects entering the atmosphere such as Tunguska or Chelyabinsk can do devastating damage due to the shock-wave travelling through the air. People could ...
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What order of magnitude incoming asteroid could we, in fact, deflect?

We actually today have programs to keep an eye out for various rocks in space that may hit Earth. It's a common sci-fi trope that when one is on course to hit us, we deflect it. That's pretty much ...
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1answer
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How big would an asteroid have to be to destroy 99.9% of the human population? How would the remaining survive? [closed]

Let's say that a mega-asteroid is heading towards Earth. I want it to destroy essentially the entire population except maybe a few million people around the world. Now, I know that for an asteroid of ...
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Rare Earth Elements in the outer solar system

If a space station were to be built in the outer solar system, is there an asteroid beyond Jupiter with a ratio of rare earth elements high enough to make it worthwhile to mine for the rare earth ...
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Can we move the moon to use as a shield?

Do we have the capability of moving the Moon just a little bit to time a intercept with a moon size asteroid like the one in the picture? It just said that if we could intercept an asteroid far out ...
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Using an Asteroid's Momentum for Spaceship Propulsion

There's a lot of talk on futurist blogs about mining asteroids for propellant and other resources for space travel, but I have something else in mind. Could a spaceship, starting out in geocentric ...
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Asteroid in the asteroid belt suddenly gains the gravity of the earth

An entrepreneur has a dream. He wants to create the most amazing and magical amusement park in the solar system. He goes to investors with the blue prints of the park, and they think it's a good idea, ...
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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 ...
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What sort of atmosphere would develop around an asteroid colony?

In the not too distant future, mankind has established several mining bases on Ceres. There are a lot of spaceships which come and go. Large mining machines are chewing up the interior for resources. ...
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How much colder would that asteroid make my planet?

I've seen some posts here (for example this one) for the effects of certain sizes of impactors, but I'm not finding any definite answer and all my google and google scholar searches have not turned up ...
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How can I make a dense asteroid field?

Okay, so I'm working on a novel and I'd like to have a dense asteroid field, something akin to the old ESB Hoth field, though it doesn't need to match that exactly. The notion is there is an advanced ...
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High-Altitude Asteroid Impact

66 million years ago, the dinosaur empire was in its death throes when its final nail in the coffin came hurtling down from the sky. A clump of rock the size of Mount Everest smashed into the Gulf of ...
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Could a route among the asteroids be built to reach Jupiter's moons once the technology to reach and set up a base in Mars is ready?

Once the technology is ready to reach and set up a base in Mars (perhaps 10 years if SpaceX expectations come true) could it be possible to build a route among the asteroids to reach Jupiter's moons? ...
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1answer
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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, ...
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Is it possible to make Asteroid Concrete?

In the far future, man is trying to build a small colony in the asteroid belt - on one of the bigger asteroids. All the materials are to be mined from asteroids, and it is assumed the colony will have ...
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What's the biggest, most spectacular asteroid collision the moon could save us from?

An asteroid collision big enough and fast enough to see a massive ejection of rock and moon-chunks, from the surface of the earth AND not wipe out the population of the planet. What size and speed of ...
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“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 ...
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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 ...
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How can an individual with Superman like powers best harvest asteroids?

In a story I am writing there is a being with Superman level strength, flight, the ability to produce lasers, and survive in space. He has decided to solve the mineral crisis by finding and grabbing ...
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How much heat would a 1km asteroid release into earth's atmosphere?

I am writing a theory for a game that is in an apocalypse. An asteroid is heading for earth and will crash into the earth regardless in this theory. It is 1km in size but due to the YORP effect it has ...
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247 views

Is it possible to divert a 1km Asteroid from Earth?

I am writing a scenario for a game that I am a fan of. It involves an asteroid heading for impact with the Earth in 2027. This asteroid's initial diameter is about 1km, but it is slowly disintegrating ...
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Could a ~150 mile impact basin form from a small object imact?

Could a ~150 mile (240 kilometers) crater form from a small object impact? So the object impacting the site of the crater is a human shape and not able to be destroyed. The location of the impact is ...
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Is it possible to hide a base in the Kuiper Belt?

With the Kuiper Belt being composed of well over 100 million objects - some grand, some insignificant - is it possible to hide an asteroid base from enemy sensors within its confines, combined with ...
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Building a Dyson Array as an energy source

For the purposes of this question, assume that a Dyson Array is a collection of discrete solar panels or mirrors orbiting the sun, all of whom share the same orbit and have same velocity. Can a ...
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What would be used for “coordinates” on a large asteroid?

Assuming we had a non-spherical asteroid that doesn't have a magnetic "north", how would the inhabitants define areas on the asteroid? How would they explain to a visitor to go to a very specific ...
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Can a 15km, rapidly-spining asteroid go undiscovered until the asteroid belt is being actively explored?

What I want to know is if an asteroid about 15 KM in diameter and roughly double that in length, spinning at a significant speed, could go undiscovered until a crew of an asteroid mining ship happened ...
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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 ...
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How could someone ground a breathable synthetic atmosphere onto a small asteroid?

Let's say there are billions of asteroids in the galaxy, varying in size from baseballs to hunks of rock almost big enough to be dwarf planets. If someone wanted to set up a habitable location on one ...
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Cataclysmic cloud of asteroid bits

I am wanting my 32km x ~7.5km buried space habitat to be hit with a cataclysmic disaster which changes things from everyday life to a survival lifestyle. I would like the station to be damaged to the ...
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What is our planetary defense capability against an Earth life destroying object?

This is World Building through a preventative measure. The Earth has been destroyed a few times in the past and it will happen again in the future, it is just a matter of time. For the first time in ...
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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 ...
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What would happen if a little less than half of the moon crashed into the Atlantic ocean? [duplicate]

Let's say an asteroid hit the moon and broke it in half. One half remains where the moon usually is relative to Earth, and the other half is flung at Earth near the equator, in the Atlantic ocean. ...
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A meteorite is about to ram into a planet. How long do the main characters have to leave the planet before they die?

At the end of Book 6 of my book series, a magic ritual has caused a large meteorite (around 1/4 the size of the one that caused the chicxulub crater) to ram into the small planet (around the size of ...
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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. ...
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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 ...
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Conditional deniability of a natural asteroid belt with an atmosphere?

Is it unreasonable to suspend one's disbelief that an asteroid belt naturally formed with enough mass distributed through the belt to justify the formation of a belt-wide atmosphere given the ...
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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 ...
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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 ...
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Could an object from space crash into Earth and set off a majority of the nuclear bombs created?

I'm currently trying to create a separate kind of Earth, without just changing my setting to a world that fits my criteria. So I'm trying to figure out a way for Earth to have a new beginning, so that ...
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Could a collision of a rogue asteroid with Pluto pull in objects from Kuiper's belt into the inner orbit without destabilizing any other Planets?

If a rogue asteroid close to the size of Pluto collides with Pluto, could this possibly cause enough disturbance to cause objects from Kuiper's Belt to be pulled into the inner orbit of the Solar ...
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Astronomical event that creates meteoroids/asteroids on a collision course with Earth?

Considering the below constraints what variant of astronomical event could create meteoroids and asteroids on a collision course with Earth? Constraints: Sustainable severity (long enough for ...
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Would a sun-blocking asteriod field be created if something big was to smash into the moon?

I'm wondering if it is plausible that a large asteroid (interstellar in origin? Or, perhaps launched from the Kuiper Belt by something big with a lot of gravity?) would be able to smash into Luna and ...
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Would Vesta Be A Suitable Spot For Colonization

So I was thinking of using the asteroid Vesta as one of the many asteroid colonies in my future solar system. Is it a viable candidate or is there any "problems" with it. The colony would be made of ...