Questions tagged [asteroids]

This is a tag for asteroids, not dwarf planets or any other astronomical object.

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votes
1answer
243 views

How fast could Earth spin and sustain life? [closed]

When dinosaurs roamed the Earth was the Earth rotating faster creating less gravity to allow for their size? How fast could have the Earth spin and be slowed down by an asteroid to the current ...
1
vote
2answers
2k views

Why is meteor speed what it appears to be?

Is the speed of a meteor through our sky because of the speed of the earth's axis rotation, or because the meteor is speeding towards us at that speed?
18
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5answers
70k views

How do the terms comet, asteroid, meteoroid, meteor and meteorite differ?

These terms are frequently used interchangeably by the uninitiated to mean approximately a “space rock”. In practical terms, how do their meanings differ?
27
votes
7answers
29k views

What is the average distance between objects in our asteroid belt?

We've all seen sci-fi movies with asteroid belts that require "great skill" to fly through, but how dense is the asteroid belt really? How much of the belt could you see from the surface of a given ...
14
votes
2answers
11k views

How does the central peak in moon craters form?

The central peak in many of the moon's large craters are visible with a telescope and they seem a little odd to me. Can someone explain how they form.
-1
votes
1answer
127 views

How an asteroid enters the Earth make a completely different outcome? [closed]

In this scenario there are different ways an asteroid could enter the Earth's crust but does the aftermath differ? Think of the surface of the Earth as thin sheet of ice and the magma the water ...
10
votes
3answers
10k views

Why did the asteroid belt between Mars and Jupiter form as it did?

I'm curious about why the asteroid belt wasn't pulled by Mars's or Jupiter's gravity or formed into either moons or planets. Why did it form into an asteroid belt instead?
3
votes
3answers
540 views

Armageddon prevention

I was watching the movie Armageddon and it made me think of a few things. We would probably not need to send a crew to blow the asteroid in two, I think we could still send a warhead with enough power ...