okay, so me and a mate were drunkely coming up with conspiracy theory crap the other night, and we got talking about all this 2012 rogue planet impact stuff. now, if a hypothetical planet were to be in an impact course for the 21's december to kickstart the rise of chtu'lu or zombies or something like that, it'd be visible in the night sky by now. unless it was travelling really, really fast.
so, let's just say, that, hypothetically, a mars-sized planet was hurtling earth-way, and no-one's told us, 'cause teh evil governments in league with the corporations and lizardmen want us to all spent money on christmas presents and thanksgiving stuff (or something ridiculous like that. involving mayans), how fast would it have to be traveling so that no-one would see it until it just popped into the sky on the 21st of december and, you know, killed us all?
With advanced sarcastic thanks.
so, let's just say, that, hypothetically, a mars-sized planet was hurtling earth-way, and no-one's told us, 'cause teh evil governments in league with the corporations and lizardmen want us to all spent money on christmas presents and thanksgiving stuff (or something ridiculous like that. involving mayans), how fast would it have to be traveling so that no-one would see it until it just popped into the sky on the 21st of december and, you know, killed us all?
With advanced sarcastic thanks.
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Wow - a question that asks about Nibiru - with actual wit and intelligence!
(stunned silence for several appreciative seconds)
Okay - you've got a great intitial set of parameters - Mars sized world - not visible until 24 hours before impact.
Lets give an initial distance for viewing the planet at.... well lets set two parameters - maximum resonable distance for this hyper-velocity planet, and a reasonable minimum distance'
Maximum distance - out at the orbit of Saturn - but in opposition. roughly 1.2 billion km
If it is to cover that distance in 24 hours, it needs to travel at 50 million km per hour or just a bit less than 14,000 km per second
Minimum distance (astronomers are not paying attention, it comes from a weird angle, its rather dark, not a flaming fireball or shiny and reflective... ) around the orbit of Mars - about 60 million km. In 24 hours - that would mean about 2.5 million km per hour or about 700 km per second.
The fastest man-made spacecraft was Helios ii - (which got its speed from being pulled in toward the Sun...) - reaching top speeds of about 70 km per sec.
(stunned silence for several appreciative seconds)
Okay - you've got a great intitial set of parameters - Mars sized world - not visible until 24 hours before impact.
Lets give an initial distance for viewing the planet at.... well lets set two parameters - maximum resonable distance for this hyper-velocity planet, and a reasonable minimum distance'
Maximum distance - out at the orbit of Saturn - but in opposition. roughly 1.2 billion km
If it is to cover that distance in 24 hours, it needs to travel at 50 million km per hour or just a bit less than 14,000 km per second
Minimum distance (astronomers are not paying attention, it comes from a weird angle, its rather dark, not a flaming fireball or shiny and reflective... ) around the orbit of Mars - about 60 million km. In 24 hours - that would mean about 2.5 million km per hour or about 700 km per second.
The fastest man-made spacecraft was Helios ii - (which got its speed from being pulled in toward the Sun...) - reaching top speeds of about 70 km per sec.
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