# Nibiru, Planet X, Nemesis, etc..

1. mplanet62
Nibiru (aka Planet X, aka Nemesis) does not exist. If it did, it would be seen in even a good amateur telescope already. Because if it was size and distance of Pluto - and had twice of Mercury orbital speed, it would take about two years to travel anywhere close to the Earth. So it must have been seen already. It's not. Therefore, any speculations of the end of the World as the result of some massive body appearance in the Solar System are just that - speculations. Period.
2. RichardJBartlett
Has anyone said it has twice the speed of Mercury? What I mean is, is that information coming from someone claiming to have knowledge of Planet X?

The reason I ask is because the laws of physics are pretty straightforward - the further away an object is from the Sun, the slower it moves - therefore it would be impossible for an object that far away to be travelling at that speed. Mercury orbits the Sun at 47.9 km/sec, whereas Pluto is only about 4.6 km/sec.
3. mplanet62
Nope, all the figures in the post are drawn from a two-year travel time for Pluto's median distance from the Sun. It's all hypothetical - as it can not be real.
4. RichardJBartlett
I'm not sure where you're getting that number from then, to be honest. Did you just make it up?
5. mplanet62
In steps - Pluto can be seen in a good telescope. Pluto's orbit semi-major axis is 5,906,376,272 km http://en.wikipedia.org/wiki/Pluto Then figuring out speed required to cover this distance in two years 5,906,376,272/2/365.25/24/3600=93.580884985 km/s That's a lot. Now taking the fastest planet of Solar system - Mercury http://en.wikipedia.org/wiki/Mercury_%28planet%29
Mercury's orbital speed is 47.87km/s (average). So, the calculated speed of any object still visible as a planet in solar system (Pluto type) to reach close to Sun (and Earth) 93, 58 km/s is roughly two times of Mercury's orbital speed. Should Mercury obtain such speed it would leave Solar System for sure.
The final step is - it is all connected to 2012 scenarios. Now is beginning of 2011 - roughly two years left. And we don't see any new extremely fast and large celestial objects entering Solar System. Means all of 2012 stuff with Nibiru, Planet X, etc. is just a load of tabloid bull.
6. mplanet62
Continuation:
Comets and meteorites may move very fast. Comet Halley speed is 150000 km/s http://wiki.answers.com/Q/What_is_th...ally%27s_comet. It enters and leaves Solar system freely. But it's rather small compared to any planet known.
7. RichardJBartlett
Okay, now I see where you're coming from. It would need to have twice the speed of Mercury to approach the Earth in the two year timeframe. That makes more sense.
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