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.
The U.S. Bureau of Labor Statistics groups all physicists under one job category. It reports that physicists, including those specializing in nuclear physics, earned average annual salaries of $112,090 as of May 2011.Those in the top 10 percent earned more than $171,430 per year.hey use their knowledge of these atomic particles to operate power plants and create energy, light beams for X-ray machines and nuclear weapons. The technical nature of their jobs usually requires a master's degree or Ph.D. in nuclear physics. In return, nuclear physicists earn average incomes over $100,000 annually.