By nuclear fuel
Hthrb
50 years = 50 years 50 months = 50/12 = 4.17 years 50 weeks = 50/52 =0.96 years 50 days = 50/365 =0.14 years Total = 55.27 years old
50 years is called a quintuplet
Since a century is 100 years, half a century would be 50. So, the answer is 50 years.
50 years
they were powered by gunpowder
Here's a rephrasing: How are rockets powered, by fuel? Yes, that's pretty much correct.
The three kinds of rockets are solid fuel rockets, liquid fuel rockets, and ion powered rockets.
in hills
It is possible that it came from the russian italian or german
small air powered motors
Germany
1000AD or so.
The first gunpowder-powered rockets were developed in Song China, by the 13th century.
You have to be 10 years old
Italy did not use rocket missile or rocket-powered aircraft in World War II. They may well have fired off mortar shells which were and are essentially rockets- but so did most of the combatants. Italy had some neat submarines, but not rockets.
Soyuz spacecraft are powered by Semyorka rockets.