Dental development. All 20 baby teeth usually come in by the time your child is three years old. Tooth eruption varies from child to child. Most children start to get teeth around six months, but it is not unusual for teeth to begin appearing as early as three months or as late as one year.
The median annual wage for astronomers was $104,100 in May 2015. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $52,460, and the highest 10 percent earned more than $166,320. The median annual wage for physicists was $111,580 in May 2015. The lowest 10 percent earned less than $55,610, and the highest 10 percent earned more than $185,230.
For example the median expected annual pay for a typical Radiation Physicist in the United States is $168,883 so 50% of the people who perform the job of Radiation Physicist in the United States are expected to make less than $168,883. Source: HR Reported data as of October 2015. Median $168,883.