Newton’s Third Law Of Motion, which states that every action has an equal and opposite reaction is the heart of rocket science.

• One of the earliest devices that used rocket propulsion was called the aeolipile, designed in the 1st century AD by Heron of Alexandria, and used steam to spin a metal ball.
• Early prototypes of rockets were produced for firework displays in China in the 13th centur...

• Inspired by the German V-2 rocket weapon in World War II, many new rocket models were made by Russia and the U.S., as military technology was sought after in the arms race that followed.
• Many American rockets were initially intercontinental ballistic missiles.
• Liquified hy...

The thrust required for an object to overcome Earth’s gravity and atmospheric resistance and move towards space is called escape velocity. Besides Earth, the gravitational forces that can affect the object are those coming from the sun, moon and even other planets.