How many years of study is necessary to complete a degree in astronomy?

Between six and eight years, but probably leaning more toward eight.

A typical path (for the US) is: 4 years for your bachelor's degree in Science (usually in Physics or Astronomy); 2 years to get your Master's degree in Science; 3 years to complete your PhD program.

they had freedom from the government and from the affairs

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "