By Elizabeth Landau, CNN. Capt. Scott Kelly, a veteran astronaut, will set the record for the longest single space mission for an American, NASA announced Monday. Kelly and Roscosmos cosmonaut Mikhail Kornienko will embark on a one-year mission to the International Space Station in 2015.
Do a personâs hair and fingernails continue to grow after death? Hair and fingernails may appear longer after death, but not because they are still growing. Instead, a persons fingernails and hair may appear longer because the skin around them has retracted, according to the Dermatology Clinic at UAMS. After death, dehydration causes the skin and other soft tissues to shrink.
In mammals, the growth rate of nails is related to the length of the terminal phalanges (outermost finger bones). Thus, in humans, the nail of the index finger grows faster than that of the little finger; and fingernails grow up to four times faster than toenails.In humans, nails grow at an average rate of 3 mm (0.12 in) a month.Fingernails require three to six months to regrow completely, and toenails require 12 to 18 months. Actual growth rate is dependent upon age, sex, season, exercise level, diet, and hereditary factors.n mammals, the growth rate of nails is related to the length of the terminal phalanges (outermost finger bones). Thus, in humans, the nail of the index finger grows faster than that of the little finger; and fingernails grow up to four times faster than toenails.