posted on Sep, 4 2014 @ 01:47 AM
originally posted by: [post=18371240]whatnext21
.....928.6 km/s beg 112.8 km end 51.9 km .....
What goes that fast??
something from far beyond our Solar System and possibly came from the galactic center or possibly by congealed debris from supernova explosions.
the escape velocity off the surface of our Sun is 615 km /s. So any "sun-grazing" object faster than that speed won't be able to keep an orbit around
the Sun and 928 km/s is way way faster than 615 km/s!! Anything going at 928 km / s is therefore, absolutely not from within our Solar System.
There's also a remote possibility that the origin is artificial and it could be a part of an alien spacecraft burning up in our atmosphere.
Unfortunately such prospect is quite worrisome, a potential portent of doom. A 1 km diameter rock hitting Earth at such speed (900 km/s) will unleash
the same amount of energy as a 10 km rock at 30 km / s and would be capable of wiping out all humans off the face of the Earth...
Not to mention, a 1 km rock going at 900 km/s is far more difficult to detect and performing a rendezvous and placing anything on its surface intact
is impossible with our present space propulsion technology. Trying to nudge such rock requires a very fleeting flyby of a missile carrying a huge
nuclear warhead (at least 100 megaton yield) and exploding with very precise timing (margin of error not more than 10 microseconds!!)
And such feat must be performed at least a year before the rock hits Earth... ...And a rock going that fast would at least be 10 billion kms away
from Earth a year before it hits, even much farther away from Pluto!!
Which is absolutely impossible!!
So the prospect of at least a 1 km object hitting Earth at 900 kms = doom for humanity. There is absolutely no way we can defeat such threat unless
we either have UFO technology or can vaporize a 1 km rock at fairly close proximity to Earth.
edit on 4-9-2014 by johndeere2020 because: (no