It occurs in about 2.1 per 1,000 live births. Cerebral palsy has been documented throughout history with the first known descriptions occurring in the work of Hippocrates in the 5th century BCE. Extensive study of the condition began in the 19th century by William John Little, after whom it was called Little disease.
Venus moves into retrograde every 18 months or so, and then stays that way for about 6 weeksWhen Venus goes retrograde, money and love areas are reviewed, and old relations could return to resume or to be completed. New love relationships may produce a change of heart when Venus goes direct.
How fast does venus rotate or revolve? Venus takes about 243 Earth days to complete a full rotation, which is very slow by planet standards. Venus has an equatorial circumference of 23,628 miles, which gives us â¦ a tangential rotational speed of about 4 miles per hour at the equator.