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.
Stones between 2 to 4 mm take 12 days while 4-6 mm stones take about 22 days to pass out of the body. Kidney stones take about 40 days to pass out on its own without any medication of other intervention. Antispasmodics are usually prescribed to relax the ureter and ease the passage of kidney stones. When on antispasmodic, it may take about 5 to 7 days to pass out the kidney stone. If the kidney stone does not pass out on its own within 2 months, other medical intervention are considered.