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Message Subject BREAKING NEWS --- Mars to be hit by massive comet! 40 billion nuke bomb size explosion! CONFIRMED!
Poster Handle phoomp
Post Content
Here's my layman's sketch of my of what I've read about Siding Spring's path overlayed on top of the planetary positions for October 14, 2014:
[link to www.dropbox.com (secure)]
 Quoting: phoomp


very nice. thank you.
yes, it is clear that all of the ejecta will be directed
directly away from the Earth, and go way way out to the
outer planets.
 Quoting: Anonymous Coward 1545225

Very welcome.


which leaves the only remaining threat: when Mars is
broken into pieces, the gravitational influence of "Mars"
will be gone, and the Earth will be sucked into orbit around Venus.
 Quoting: Anonymous Coward 1545225

Diameter of Siding Spring Comet: 10km - 50km
Diameter of Mars: 6,778km

Even with a potential impact strength of 2×10¹º megatonnes, it seems unlikely that Mars is so brittle that something 0.7% of it's size could shatter it. For a layman's scale model test, shoot a bullet at a boulder and see what happens.
 Quoting: phoomp


ouch! you got me :)
 Quoting: Anonymous Coward 1545225

;)

I've got another one for you. Even IF Mars were to disappear, the gravitational force it exerts on Earth is VERY minimal. Jupiter exerts more force on Earth than Mars does, and it's still just a fraction of what the Sun exerts on us. What keeps us a nice, cozy distance isn't the Outer planets holding us back; it's the speed and trajectory of our orbit around the Sun.
 
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