Linked Questions

1
vote
1answer
475 views

How large would an impact have to be to destroy earth? [duplicate]

Supposing I had a planet the size of the earth, how much mass and how much velocity would an impacting body have to have to completely annihilate the planet? That it is to say that its reduced from a ...
0
votes
0answers
148 views

How much force would be needed to split the moon in half? [duplicate]

I've always seen things in fiction and in the Quran where the moon was split in half. Then, it got me to thinking, how much force, if there is even a formula for this and if so point me in its ...
37
votes
10answers
11k views

How can I destroy a gas giant planet?

We have already discussed how difficult it would be to blow up a planet like Earth, basically deciding that you can't do that with any reasonable amounts of energy. But what if I don't need to blow up ...
42
votes
7answers
10k views

What's the largest body in the solar system that you could destroy without endangering humanity?

You're an alien that really likes pyrotechnics. Nothing that goes boom on your home planet (in a safe and responsible manner) satisfies you any more. Why not blow up a planet and see what that's ...
25
votes
12answers
9k views

Can planets die of old age

I was wondering if planets die after a certain amount of time, perhaps because of decay? If this is the case, how do they die and how long does it take? Do they implode? Explode or perhaps just fall ...
31
votes
6answers
3k views

On the immediate effects of a small, short term black hole

What immediate effects would a small, short-term black hole have if it appeared in a residential backyard? How small or short-lived would it have to be to be survivable, if it is survivable at all? ...
16
votes
8answers
4k views

Can we start a colony on a passing rogue planet?

A rocky planet, similar to Earth in mass and composition, is set to pass through the solar system in one year's time. It has frozen oceans of water ice and a thin atmosphere of unknown composition. It'...
11
votes
3answers
3k views

What would be the effect of a powerful explosive going off in the core of a planet?

What would happen if a powerful explosive went off in the core of a planet? On Earth, you have several layers of the planet, the crust, the magma, the outer core, and the inner core. Right now, human ...
9
votes
5answers
2k views

How fast would a planet have to be spinning for the centrifugal/centripetal force to cancel out the force of gravity near the equator?

So, I know that on the planet earth, the force of gravity is actually slightly less nearer the equator, due to the Centrifugal Centripetal Spinny Force. Not by a whole lot, but by some small amount. ...
2
votes
8answers
14k views

How much antimatter would we need in order to wipe out all humans, eradicate all animals and blow up the Earth?

Supposing we had many thousands of antimatter bombs (they can be detonated in many different locations), how much total antimatter would we need in order to wipe out all humans on Earth? Supposing we ...
10
votes
4answers
1k views

Size of the volcano that ends the world

One of the theories behind the extinction of the dinosaurs is the eruption of one or a series of volcanoes. Supposedly the ash expelled by these eruptions blocked out the sun, killing plants and thus ...
1
vote
2answers
12k views

How much TNT do you need to blow up the moon? [closed]

How much TNT do you need to blow up the moon if you place it exactly in the middle? Just think of the explosion -- that there's no air in space doesn't matter! What do you think is it possible and ...
6
votes
1answer
1k views

Can we actually “blow up” the sea?

Reading questions of How much TNT needed to blow up Mount Everest and the Moon - and especially the comments below it, I have to ask it: Can we blow up the sea? Detonating atomic bomb undersea may ...
1
vote
2answers
4k views

Can we destroy the Sun? [duplicate]

The Sun is evil, we must destroy it by any means possible to us today! Can we destroy it? Or at least shorten it's lifespan.
5
votes
4answers
719 views

How to fragment a moon to form a ring around a planet

Given a planet about the size of Earth, and a moon the Size of the Moon, how could one destroy the moon without flinging the fragments onto the surface of the planet or into outer space? How can one ...

15 30 50 per page