By nuclear fuel
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
Hthrb
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.
in hills
small air powered motors
1000AD or so.
Germany
You have to be 10 years old
The first gunpowder-powered rockets were developed in Song China, by the 13th century.
Three main types of rockets that power modern spacecrafts are liquid-propellant rockets, solid-propellant rockets, and hybrid rockets. Liquid-propellant rockets use liquid fuel and oxidizer, solid-propellant rockets use solid fuel and oxidizer mixed together, and hybrid rockets use a combination of solid and liquid propellants.
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.
Tiny models, Missles, Space probes, and Rocket-powered jet packs.