Eris' size resulted in its discoverers and NASA labelling it the solar system's tenth planet. This, along with the prospect of other similarly sized objects being discovered in the future, stimulated the International Astronomical Union (IAU) to define the term planet more precisely. Under a new definition approved on August 24, 2006, Eris was designated a dwarf planet along with Pluto and Ceres.
Best Answer: it depends on a few things~...but the longest time a human can stay upside down is 2 days.. If your heart is reasonably healthy and you aren't restricted, then you shouldn't pass out at all, any more than you would laying down or standing up.
i still insomnia 75 days after stopping tramadol for nerve damage ill only sleep 3 to five hours aday without any naps any idea how long this my go on before this perscription i feel asleep within ten to fifteen minuts most of the time now it takes 1 to three hours all the time.