Tag Archives: asteroid

The origin of life: Panspermia, meteorites, and a bit of luck

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In the opening scenes of Stanley Kubrick’s 2001 Space Odyssey (1968), Neanderthal-like folk are scrounging for food, squabbling with a neighbouring tribe who are intent on competing for the meagre lickings (a reactionary condition that would not bode well for future humanity). One of them picks up a large bone.   There’s instant recognition, seemingly influenced by a black obelisk that appears mysteriously, that it can be used for something else. His neighbour lies in a crumpled heap. In what has become an enduring Sci-fi image, he triumphantly hurls his weapon into the air, whereupon Kubrick transforms it into an orbiting space station. Continue reading

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Throwing the Celestial Dice

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NASA image of a young lunar crater

The expression global extinction frequently conjures images of all life being snuffed out by an act of celestial hubris.  Asteroids, bolides or comets can be lobbed our way at whim.  Earth, in its first billion years or so was probably hammered by extra-terrestrial bits of rock and ice.  The cratered surface of our moon attests to this.  Some argue that it was these early collisions that provided at least some of our water and possibly even the organic compounds that eventually gave rise to life itself. Continue reading

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Make your own meteorite crater – comparing experiment with the real world

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What a meteorite impact might look likeClick on the image to make it larger

Make your own meteorite crater – comparing experiment with the real world

This post shows you how to make your own meteorite crater – it’s pretty easy. There are also many interesting questions we can ask of our experiments with craters, like “how do they compare with real craters?”

Meteorites in earth/solar system history

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