1 Eris is the most massive dwarf planet in the Solar System, exceeding Plutoâs mass by 28%. As such, it was a serious contender to be a tenth planet but failed to meet the criteria set out by the International Astronomical Union in 2006.  Eris was named after the Greek goddess of discord.
According to the American Urological Association, the time to pass stones located in ureters -- tubes leading from the kidneys to the bladder -- is an average of 8 days for stones less than 2 mm, 12 days for stones between 2 and 4 mm and 22 days for stones between 4 and 6 mm.
Treatment of kidney stones Kidney stones can be managed in a number of ways, depending upon the size of the stone, your other medical problems, and your overall comfort level. Many small stones will pass with the help of medications, which will keep you comfortable while the stone passes naturally. This process may take a few days to a week or more.